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David C H Ngie
User

Apr 2, 1999, 10:53 PM

Post #1 of 59 (155241 views)
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please help me to set up the filter system to cater for pond size=4mx4mx2m.
ps:i have read the forum for pond construction by Mr Hans Ham,if possible please advise me how to calculate the volume & size needed for building the pond mentioned above.

regards.
Dave


Khoobg
Webmaster


Apr 4, 1999, 8:04 AM

Post #2 of 59 (155070 views)
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Hi,

A pond with 4m x 4m x 2m will have a volume of 32 cubic metre and this convert to 32 tons of water (1 cubic metre = 1000kg)

As the surface area of the filter should preferably be at least 30% of the surface area of the pond, a filter with a minimum surface area of 4.8 square metre is prefered. (This translate to a size of 1.6m width and 3m length.

Khoo BG



David C H Ngie
User

Apr 5, 1999, 8:53 PM

Post #3 of 59 (155067 views)
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Dear Mr Khoo,
Thankyou very much for your expert comment on the pond filter construction.However,please advise the specification of 4mx12mx2m.
your great help will help me to build a fool proof pond project.

regards
Dave.



Khoobg
Webmaster


Apr 8, 1999, 9:22 AM

Post #4 of 59 (155067 views)
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Hi Dave,

4x12x2 will work out to be 96 tons and a surface area of 48 square metre.

The minimum filter size should therefore be 14.4 square metre. To achieve this, run your filter with a "L" shape running along one long and one short edge of the pond (1 metre width)

With this filter, the surface area will then be 13m x 1m + 4m x 1m = 17 square metre which is equavalent to 35.4% of pond surface area. Place timber planks on top of the filter to serve as walkway.

Khoo BG


Hans Ham
Deleted

Apr 8, 1999, 8:42 PM

Post #5 of 59 (155065 views)
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Hi Dave,

This is greeting from Hans Ham



David C H Ngie
User

Apr 9, 1999, 1:21 AM

Post #6 of 59 (155066 views)
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Dear Mr Khoo

Thankyou once again for your suggestion on the bigger filter.But i don't seemed to be able to understand how the "L" shape filter works.Does it mean two indepedence filter?How many waste outlet needed in the pond?How many section inside the filter?
Please help me to understand the queries mentioned above.

Regards.
Dave



Hans Ham
Deleted

Apr 9, 1999, 9:23 PM

Post #7 of 59 (155065 views)
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Hello Dave!

Pls. let me know your fax no. and i,will fax you a suggestion for your pond and filter.
Regards
Hans Ham
ZNA. Malaysia


David C H Ngie
User

Apr 10, 1999, 2:05 AM

Post #8 of 59 (155067 views)
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Dear Mr Hans Ham
Thankyou verymuch of helping me up in these matter.I am now forward my fax no to you 085-419345.

Regards.
Dave


Khoobg
Webmaster


Apr 10, 1999, 5:42 AM

Post #9 of 59 (155066 views)
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Hi Dave,

I will leave this topic to Hans Ham.

Khoo BG


Khoobg
Webmaster


Apr 10, 1999, 5:47 AM

Post #10 of 59 (155066 views)
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Hi Hans Ham,

I wonder whether you can get the proposed layout scanned and email me the jpg file. I will post the proposed layout here for the benefit of the visitor to this forum

Email to me at koi@koi.com.my

Thanks

Khoo BG

(This post was edited by Khoobg on Jan 15, 2002, 9:55 AM)


Hans Ham
Deleted

Apr 11, 1999, 10:47 AM

Post #11 of 59 (155065 views)
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Hello David !

I,need more info. on your Pond.
Loc./Size/ Sunshine % or hr. per Day.
As you have asked first for 4x4x2 and
now 4x12x2.
A,Pond of 4x12x2 will be very Expensive
to Build, approx. 60-80,000. if you Build
a Overall system to LAST.
This size is not a Pond for Beginners,as the Monthly running cost is about 1500-2000.
THE CHEAPEST WAY TO BUILD A KOI POND IS TO BUILD IT ONCE,BUT BUILD IT "PROPERLY"

Regards Hans Ham



David C H Ngie
User

Apr 15, 1999, 10:08 PM

Post #12 of 59 (155066 views)
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Deart Mr Hans,
Thankyou for your concern,my pond right now is 4x4x1.As it is to shallow,so,the first idea was to increase the dept.So i ask for smaller pond filter.
The bigger pond is to extend from the existing pond to further beatify the landscape.The contractor quoted me $40,000.00 inclusive of filter ie the lots.
I was in KL yesterday,i visited one koi shop in Cheras where the owner build a semi on-ground pond inside the Shophouse.Do you have any opinion on that?
Refering to the running cost,do you mean the electricity bill incurred or there is other hidden cost that i am aware of.


Khoobg
Webmaster


Apr 16, 1999, 3:22 AM

Post #13 of 59 (155066 views)
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Hi Dave,

I believe what Hans Ham mentioned on the running cost of big ponds are as follow :-

(1) Electrical bill as you really need a lot of water pump and air compressors.

(2) water bill which can be substantial as you will have to change about 10% of the water everyday.

(3) Maintence cost on pumps and air compressor equipment which will break down after some use.

(4) Do not forget that with bigger pond water volume, any chemical you wish to add to improve water quality will also increase tremendously.

Khoobg


spoonkii
Novice

Apr 16, 1999, 11:36 AM

Post #14 of 59 (155067 views)
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Hi, David

How is the pond going on?? I heard from a friend that you have already comfirm the people to rebuilt your pond, maybe I'm busy body, but I have a suggestion that maybe you should keep your existing pond depth and joint the new one deeper. You can keep the old one as your feeding area. And you should joint the koi club if you have not, 'cause every month there is some one there going to japan to get the stock which supply almost the whole Malaysia, including the dealer where you bought your fish from in Miri. Few of my friends' pond had been service by the local aquarium here to the point where all the fish died.

regards

(This post was edited by spoonkii on Jan 15, 2002, 9:55 AM)


David C H Ngie
User

Apr 16, 1999, 9:47 PM

Post #15 of 59 (155066 views)
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Hi,Spoonkii

It is nice to hear from someone in the same kampung.Any how,the purpose of this exercise is to build a "foolproof"pond,i am very thankfull to all the precious comment from all the member.Hopefully i can get it started in no time.
As for the fish sourcing,my buyer is attending a koi show in Nigata,Japan this week,i ordered some kuhako/tancho/asagi to stock up my pond.You're feel free to drop by sometime to view the new stock by next week.

Regards.
Dave



spoonkii
Novice

Apr 16, 1999, 11:10 PM

Post #16 of 59 (155066 views)
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Hello, David

I heard about the trip, I my friend knows the person who is inccharged of supplying in KL. These people import thousand of fish a month, which is sold at a supplier price.

regards.


David C H Ngie
User

Apr 19, 1999, 9:51 PM

Post #17 of 59 (155066 views)
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Dear Mr Hans,
i am commencing my work on the 10mx4mx1.5m pond.pls help me out with the design of the filter.

Regards.
Dave.


Hans Ham
Deleted

Apr 20, 1999, 6:29 PM

Post #18 of 59 (155065 views)
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Hallo David !
Fax me the proposed lay out of your pond,
Loc./Sunshine %/ and the actual size,
as i can see you changed the size again.
i have asked you for this info. on 11/apr.
Pls. david make your mind up ,because our help is on voluntary base
if this is a exercise for you dont waste our time. As i have alrady desinge a layoutfor 4x12x2.

Regards Hans Ham Fax 603-7805591


David C H Ngie
User

Apr 20, 1999, 10:42 PM

Post #19 of 59 (155066 views)
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Dear Mr Hans
Sorry for the inconvinence,the reason is because the contractor did not give me the actual size until today.I will fax your the net size of the pond.As the sunlight,it only shine from 12pm -5pm in the alfternoon.There is also covered "netting shade" above the pond.

Regards.
Dave


David C H Ngie
User

Apr 22, 1999, 1:03 AM

Post #20 of 59 (155066 views)
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Dear Mr Hans
Thankyou verymuch for the "Professional filter layout"This answer to a lot of queries for beginner.With your permission ,i would like to share your design with some of my friends like Spoonkii.I particularly likes the separate"vortex"chamber,it is a wonderful idea.
Once again thankyou verymuch.It makes my work so much easier.

Regards.
David


Khoobg
Webmaster


Apr 28, 1999, 7:39 PM

Post #21 of 59 (155066 views)
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Hello,

The pond layout completed by Mr Hans Ham is hereby attached for the benefit of the viewer. For comments and suggestion, please post to this forum again.

Smile

(This post was edited by Khoobg on Jan 5, 2000, 9:00 AM)


Khoobg
Webmaster


May 2, 1999, 10:06 PM

Post #22 of 59 (155066 views)
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More drawings completed by Hans Ham





(This post was edited by Khoobg on Jan 5, 2000, 9:00 AM)


Khoobg
Webmaster


May 2, 1999, 10:19 PM

Post #23 of 59 (155066 views)
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More drawings by Hans Ham






(This post was edited by Khoobg on Jan 5, 2000, 9:00 AM)


David C H Ngie
User

May 3, 1999, 9:05 PM

Post #24 of 59 (155066 views)
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Hi Mr Hans,
With your help,my pond is coming alright.I will post the photo once it is ready.
just to make sure what is a "uniring" in your filter design?


Khoobg
Webmaster


May 4, 1999, 4:42 AM

Post #25 of 59 (155066 views)
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Hello Dave

The uniring is a porous black hose which is coiled to form a ring and is connected to air pipe (from HI Blow). The minute holes in the black hose produce a lot a air bubble when the HI Blow is turned on.

Take note that the uniring is place at a small distance from the base of the pond. The bubbling effect cause a water current to move from the centre of the uniring towards the top of the pond. With the Air pump action, all the heavy fish waste that falls to the bottom of the pond will be dragged to the bottom drain (centre of uniring) via this small gap and being discharged. The discharge is assisted by air bubbling along the stand pipe.

This is what Hans means by Forced Removal of Dirt

(This post was edited by Khoobg on Jan 15, 2002, 9:55 AM)


David C H Ngie
User

May 4, 1999, 9:39 PM

Post #26 of 59 (66092 views)
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Dear Mr Khoobg,
Thankyou very much for the answer on "uniring".It's being a great help.



David C H Ngie
User

Jun 15, 1999, 10:45 PM

Post #27 of 59 (66092 views)
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Hi,Guys.
At last, my pond is ready.I hereby express my gratitude to those who help me along the way especially Mr khoobg & Mr Hans Ham.I'm now having a 100 tons crystal clear water pond that back up by 50 tons filter that i get most of the design from the club.
I am trying to figure out how to put the whole process ie photo to the forum so that every one can share the design.May be Mr Khoobg or Mr Hans can help me up ?


Khoobg
Webmaster


Jun 16, 1999, 1:11 AM

Post #28 of 59 (66092 views)
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Hello Dave,

Congratulation on your completed pond Smile

To send the photo to me for inclusion in this forum, take one of the following steps :-

(1)If you have a digital camera, take the photo and email me the .jpg file by email attachment to koi@koi.com.my

(2)If you have a scanner, scan the ordinary 3R photo and similarly email the .jpg or .tif file to me at koi@koi.com.my

(3) Just mail me the 3R photo via normal post and I will do the rest. My address is :-

No.5A Jalan Pandan Indah 4/6A,
Pandan Indah, 55100 Kuala Lumpur,
Malaysia

Khoo BG




David C H Ngie
User

Jun 18, 1999, 3:01 AM

Post #29 of 59 (66092 views)
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Hi Mr Khoo Ng,
I try the scanner it did not turn out clear,instead i will sent you the photo.


Khoobg
Webmaster


Jun 18, 1999, 3:47 AM

Post #30 of 59 (66092 views)
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Hi,

Just put them in the mail and I will do the rest

Khoobg


David C H Ngie
User

Jun 19, 1999, 2:55 AM

Post #31 of 59 (66090 views)
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Dear Mr Ng
I am sending the photo to you by today.I will be outstation again for 1 week,i will get back to you when i get back.

Regards.
Dave


Khoobg
Webmaster


Jun 19, 1999, 2:59 AM

Post #32 of 59 (66090 views)
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Hi Dave,

See you then. By the way, my surname is Khoo.

Thanks

Khoo BG


David C H Ngie
User

Jun 19, 1999, 9:34 PM

Post #33 of 59 (66090 views)
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Sincere apology for addressing your surname Mr Khoo.

Regards
dave


Khoobg
Webmaster


Jun 26, 1999, 9:09 PM

Post #34 of 59 (66090 views)
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Daves pond is now featured on this page

www.koi.com.my/d1.htm


David C H Ngie
User

Jul 2, 1999, 9:38 PM

Post #35 of 59 (66090 views)
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Hi,Mr Khoo.
Thankyou for putting up the pond picture.please comment on the pond & filter design,so it will beneficial to me and to the other member as well.


KokJong
User

Aug 28, 1999, 8:15 PM

Post #36 of 59 (66090 views)
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Hi Khoo,

1. Filter is an important element in maintaining quality water even for small fibreglass water tank.

2. What should I be looking at? chamber filter or drum filter? to maintain crystal clear water condition for a water tank, sized 2MX1MX1M?

Kindly advise.

Regards.

------------------


Mark
Veteran

Aug 28, 1999, 8:49 PM

Post #37 of 59 (66090 views)
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If you could provide more details:
1. How many koi do you intent to keep?
2. The ultimate size of your koi?
3. Your budget?
4. The decor consideration?
5. Facilities like tank is next to drainage system, etc.

Nice tank size you have.


KokJong
User

Aug 29, 1999, 7:42 PM

Post #38 of 59 (66090 views)
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Hi Mark,

1.I just bought a fibreglass tank measured 6ftsx3ftsx2fts with no drainage system. It comes with an overhead 3 3fts(W) box filter. There are compartments in the filter box to deposit the filter media. I paid S$430 for it excluding delivery and no water pump. It is the most reasonable price that I cld find.

2. I guess water tank in JB is cheaper. For a 6fts kidney shaped tank with an internal filter compartment you pay RM$1100 or less. In Singapore, you pay the same price in Singapor dollars!

3. I intend to keep just 9 Kois although I'm so tempted to collect the 14 offical types.

3. There will be no decor in the tank but I may consider putting some plants in the box filter. Recommendations?

4. I doubt the fish will grow very large in such a small tank. Probably 40cm-45cm is the max.

Regards.


Mark
Veteran

Aug 29, 1999, 8:33 PM

Post #39 of 59 (66090 views)
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I suppose this NEW tank is placed indoor and sunlight shines only at certain time of the day. It contains 3 chambers.

If that's the case, there is no need to spend a bomb! However, you have to jumpstart your bio filter first. A normal fibre mat and bio balls is more than sufficient to keep your tank clear. I shall not use the word crystal clear - very subjective. If your f.box comes with back flush, then maintenance is make easier. Every week just drain out all the "dirts" and stop the valve till the latter is clean of "dirt".

Hope this help.

Incidently, how long have you been in this hobby?


KokJong
User

Aug 30, 1999, 8:28 AM

Post #40 of 59 (66090 views)
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Hi Mark,

1. Yes. I placed the new tank in my study room. I cld enjoy the the Koi and "Water music" as and when I get exhausted on the computer.

2. This f.box comes with 4 chambers. I don't know much about the technical term on the filter media. Anyway, lets see..I placed those hard wiry bio filters on the bottom layer of all the chambers. spongy filter media were placed on the 2nd layer in all the chambers. Next, 1st and 2nd chambers contain small clay filters with hole in the center. 3rd chambers contains bio balls and coral stones. 4th chambers containes bags of activated carbon.

3. I poured Aquamate to condition the water and to reduce stress in the fish.

4. The f.box is attached to a water pump and there is no back washing feature. I've been advised that once the water is conditioned, water cld be changed half-yearly. I guess this is too good to be true.

5. I'm Novice. I started my Koi hobby almost
3 months back. How about you?

Regards.


------------------


SiaCW
Novice

Mar 14, 2000, 7:50 PM

Post #41 of 59 (66089 views)
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Hi KokJong,

May I know where you get the fibreglass tank from at $430? A shop that I visit charging me $550 without the filter box!!


Anonymous
Anonymous

Mar 15, 2000, 2:21 AM

Post #42 of 59 (66090 views)
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"Seng Seng Tropical" located at 15 Fish Farm Road 2 have a good selection od new and used ones for as low as $300. Filter boxes cost something from $200 onwards. Need to bargain with.

I got mine 2 weeks ago at S$400 for a 5x3x3 feet. Initial asking price was S$550.00

Good luck to you.


Sam Ong
New User

Mar 25, 2000, 12:13 AM

Post #43 of 59 (66089 views)
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Hi,

With regards to the pond filter, is it advisable for the pump to be operational for 24 hours or on a 4-hour on/2-hour off shift (to prolong the life of the pump and reduce your electricity bill) ?

Regards.


cch
User

Mar 25, 2000, 12:32 AM

Post #44 of 59 (66089 views)
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Water Pump for pond filter and Air pump must be on 24 hours a day so that the filter can continue to treat the pond water to prevent the build up of ammonia and nitrite.

There are so many type of pumps in the market and buying the right pump is important as it will save you a long of money. Some of the pump in the market has a power rating of 375Watt the has a smaller pumping capacity than the 150Watt OMNI pump which pump faster and save 60% on power bills.

Cheers


Laksaginta
Novice

Jun 12, 2001, 12:56 AM

Post #45 of 59 (66091 views)
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Hi , I need more suggestion from you guys.
My pond with 8 pcs of 40 cm Koi experiencing green color and high nitrite content after 4 weeks old.
My water reading yesterday was
pH = 8.0
Nitrite = 1.0 mg/l NO2
Nitrate = 500 mg/l NO3
Amonia = 0.2 mg/l NH3
KH & GH have not been tested yet(waiting for the test kit to be available)
subsequently I did 50% water change
and this morning the NO2 reduced to 0.5 mg/l
Again I did 50% water change and taken out all water plants(Keladi plant),I will test again the reading by tomorrow morning.

However the water still in green color.Fish almost invincible.

I have installed trickle tower filter(1500 pcs bio ball) on top of the Japanese green mat chamber,yesterday and the output goes back to the chamber and transfered to the pond via waterfall.
The pond is "L" shape , size approx. 3.6 m x 3.6 m x 0.8 m depth, filter chamber is adjacent to the L pond size 1m x 1.8m x .8m.

The drain system using uniring,forced removal dirt concept, with timer every 6 o'clock will drain the pond for 1 minute.
( photos will be email to webmaster if allowed)
I used 1000 GPH submersible pump located in the filter chamber and the outpout is splitted into two outlet one to the waterfall and the other to feed the TT.

Question are;
1. Do I need to wait another 4 weeks for the TT to mature.
2. Is the above filter configuration is still considerd undersized?
3. Is the input flow rate(approx. 500 GPH) for TT is sufficient?
4. I am thinking of installing another TT which feed directly from the pond, without going thru green mat, is this will help to quicken the eliminate green water?

Your expertise advice on this matter will be highly appreciated.

Cheers,
Laksaginta



Khoobg
Webmaster


Jun 13, 2001, 8:57 AM

Post #46 of 59 (66090 views)
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Khoobg
Webmaster


Jun 13, 2001, 9:09 AM

Post #47 of 59 (66090 views)
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The filter is definitely undersized (only about 14% of pond's surface area). This deficiency can however be compensated with the use of trickle tower. You may need to wait for a while for your trickle tower to reach its potential. Flow rate to trickle tower should be slow and 500GPH is considered fast.

TT should install in the last stage of filtration system. You always want to have water entering your trickle tower to be free from heavy fish waste. If you wish to introduce water directly from the pond to trickle tower, you will need to add prefitler on top of the trickle tower to filter off heavy waste. Fine matting will be good for the job but you will need to clean them often and is definitely not comfortable.

Adding more TT will definitely help Smile


Ken Sutanto
Novice

Jun 13, 2001, 6:01 PM

Post #48 of 59 (66090 views)
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Laksaginta,

To calculate the surface area and capacity of your pond and filter. You need to give a sketch with dimension. You said pond size 3.6 X 3.6 X 0.8 Mtrs but it is L-Shape, not rectangular. Without correct data, may lead to wrong direction.
Green water for new pond is normal when no cover at all over your pond. If you want to get your filter mature, I can rent to you my fiter mat few pcs so can reduce the amonia and nitrite level quicker. Also I can rent you one bag of bioball of my trikle tower.
To overcome green water quickly, you need to cover partially your pond with net or install a UV in the last chamber of you filter. If you can wait for green water problem, when your filter and tricker tower mature, the green water will move away as well.

Hope that helpful.

Cheers,

Ken


Chingbee
User

Jun 13, 2001, 9:35 PM

Post #49 of 59 (66090 views)
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Dear Mr. Khoo,

Since you said that Trikle Tower should be situated after the filter how do I do this?

This is how my filter will be designed:
1. Vortex (circular)
2. filter with netting
3. matting and rocks
4. might put uv then pump

This will be like the design of Mr. Hans with water going down and up and down and up. So on the last chamber I will then have only 1 pipe going to the UV? then 1 pipe going to the pump? Where will I situate the trikle tower if I will incorporate it on my filter?

Ching


Khoobg
Webmaster


Jun 13, 2001, 10:52 PM

Post #50 of 59 (66090 views)
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In normal filter design, water pump is normally situated in the last chamber to pump the water back to pond. Instead of pumping all the water back to pond, you may wish to divert some of the water to trickle tower. Some of the water can also be diverted to water way where you can plant a lot of vegetation to absorb nitrate from your water. Water from these water way or TT will finally go back to pond via gravity.


Chingbee
User

Jun 13, 2001, 11:55 PM

Post #51 of 59 (54565 views)
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I will be putting up a waterfall as part of the design of the pond - with my 60 tons water volume - how big should my pump be - to make a nice water fall as return and part will go to TT? how will the return via TT be? also a water fall?

Ching


Khoobg
Webmaster


Jun 14, 2001, 3:00 AM

Post #52 of 59 (54565 views)
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You can lead the water from TT to first chamber of filter or to the pond via piping.

As the pump, how many filter box you are going to build for your pond ?


Chingbee
User

Jun 14, 2001, 5:35 AM

Post #53 of 59 (54566 views)
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I don't know yet - but probably only 1 filter, I might make one small filter for the skimmer so I will need another pump for that.

What did you do Mr. Khoo with your skimmer? did you put the water coming from the skimmer directly to the main settlement tank together with the bottom drain?

Ching


hatemzalloum
Novice

May 19, 2002, 3:00 PM

Post #54 of 59 (54526 views)
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Re: [Hans Ham] Pond Filter [In reply to] Can't Post

Hi, Mr. Hans Ham,

This is Hatem Zalloum from jordan, I have an 80000liter pond naturaly designed and made of concrete. It has only one bottom drain of 3 inch.

This pond does not have a filter, I change the water every other week and use it for irrigation.

now i dicided to install a biological filter and stop the water changes.. can you please help me on that ?

Thanking you in advance and wishing you all the best.

hatem zalloum


gemmgjl
Novice

Aug 17, 2002, 5:46 AM

Post #55 of 59 (54435 views)
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Re: [David C H Ngie] Pond Filter [In reply to] Can't Post

40,ooo as in dollars? i built mine with a shovel and waterbed matteresses,.it is 4 feet deep at deepest point with very steep sides ,it is over 3000 gallons ,i joined the waterbed material after cutting it into sheets with greatstuff polyurethane foam ,about a foot overlap , i used the foam to secure the rocks at the edge and put in two water falls as i used the dirt from the excavating to terrice the yard.the water falls are full of seaweed and the top one full of pumic rock , the second larger waterfall has the pump going under the gravel under a plate below that , never had any trouble , and i don t add water unless i have to or to dilute any meds or salt ,the rocks were the hardest part as i had to bring them home a little at a time , some were very large , side of express way , jobs i was on ect had very good ones, ,put in lots of plants and its been going strong for over 15 years now , although the trees give me a lot of trouble ,getting ready to expand one more time , but it is best to just add on to existing , if you leave the shollow one and load it with veggie matter arum iris lillies duckweed ect and lava rock , use a small pump to feed into that and you ll have more filtation and bio action

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just from that


gemmgjl
Novice

Aug 17, 2002, 6:12 AM

Post #56 of 59 (54432 views)
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Re: [David C H Ngie] Pond Filter [In reply to] Can't Post

wow , i was just looking at your pics, i m a carpenter , and work for a constuction co.that put in production lines in the ohio ford plants as well as gm and chrystler from time to time , i don t think we put that much work into those , he he , .very very impressive,if i ever have a spare 40 000 laying around i might have to do something like that to my pond , lol , seriously,nice work

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JoyceLim
Novice

Jan 26, 2003, 4:55 PM

Post #57 of 59 (54320 views)
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Re: [Hans Ham] Pond Filter [In reply to] Can't Post

Hi Hans,

Need your expert advice on the filter system as I am thinking to have one to support my 5ft * 3 ft * 1.5 ft tank. Currently, it is supported by a canister which I dont think it is good enough Crazycos we need to change the water -- 20% - 40% of the water every 3 days. This has caused much stress to my koi.Frown

I have come up with the measurements for the filter design which is extracted from a book and would like very much to hear your comments and suggestions for improvement. Hopefully, it will help to stablise the water condition. ACoolfterwhich, I have to worry for another issue - mosquite. Guess that I have no choice for the sake of the koiCrazy

Appreciate if I can have your email address so that I send it for your comments.

Rgds

Joyce Lim


dttk
Veteran

Jan 28, 2003, 8:01 AM

Post #58 of 59 (54283 views)
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Re: [JoyceLim] Pond Filter [In reply to] Can't Post

Hi Joyce, we haven't heard from Hans for a very long time Crazy. I think he has left the forum long ago Smile.
Always friendly :)


JoyceLim
Novice

Jan 28, 2003, 12:02 PM

Post #59 of 59 (54274 views)
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Re: [dttk] Pond Filter [In reply to] Can't Post

Thanks for the update.Blush

Just trying my luck.

 
 



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