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Home: KOI Talk: Pond Construction & Water Filtering System:
Advise needed on filter arrangement

 





 


scinomore
Koi Lover

Apr 23, 2008, 8:47 AM

Post #1 of 18 (1689 views)
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Advise needed on filter arrangement Can't Post
 Hi all, i'm new koi ponder and need advise on filter arrangement for my new 8k liter pond. The pond almost complete but a few things such as filter bay arrangement and water return features still under consideration. Attached is my filter and proposed media. Before finalised the things, i really need advise from you all on the proposal. Any comment and suggestion will be much appreciated..


(This post was edited by scinomore on Apr 23, 2008, 8:54 AM)
Attachments: myfilter.jpg (55.0 KB)


scinomore
Koi Lover

Apr 23, 2008, 8:58 AM

Post #2 of 18 (1681 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
the overall scenario..


(This post was edited by scinomore on Apr 23, 2008, 9:04 AM)
Attachments: rear_pond2.jpg (42.5 KB)


water
Koi Lover

Apr 23, 2008, 10:17 AM

Post #3 of 18 (1664 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
I like option 1 better. Assume that the moving beads has a fine mesh outlet and having that chamber as far down from the first chamber will ensure that less debris and particles will get to the moving bead chamber and reduce the possibility of blocking the fine mesh outlet. Moreover, the beads chamber will need to have airstones placed at the bottom to keep the beads moving ... looking at the design in option 2, the air will get into the first chamber and unsettle the trapped debris in the brushes.

Also, in filter design, it is always better to have water moving from the bottom to the top, meaning that each chamber are separated by a transfer port which brings water from the top to the bottom and then, the water always rises up in the chambers. This way, the debris and sludge is trapped at the bottom and when you backflushed or clean, the sludge is always at the bottom and be the first to be flushed away. Having water from the top, means that the debris which are trapped at the top, will be difficult to be flushed away by the bottom drainage. Take your first chamber with brushes, the debris and sludge will be trapped at the top of the filter instead of the bottom...which is less than ideal.


scinomore
Koi Lover

Apr 23, 2008, 10:37 AM

Post #4 of 18 (1661 views)
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Re: [water] Advise needed on filter arrangement [In reply to] Can't Post
hi water, thanx for the advise... yes the moving bed chamber has fine mesh sieve and will be heavily aerated. Regarding water flow from bottom to the top, i'll try to follow your advised... can i use transfer pipe like in moving bed chamber for each chamber rather than use wall separator or transfer port?


(This post was edited by scinomore on Apr 23, 2008, 11:20 AM)
Attachments: myfilter2.jpg (75.3 KB)


water
Koi Lover

Apr 23, 2008, 11:16 AM

Post #5 of 18 (1648 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
yes, transfer pipe and transfer port does the same function as long as you use a pipe which is big enough. Also, it would help - a valuable addition, not a must - if you can do the transfer pipe with by pass ie. by pass one chamber such that the water is redirect to the next chamber... to facilitate washing and cleaning. The filter continues to work while you wash one chamber - which is good because you should never wash all the chambers at the same time... wash with pond water and not tap water. Filter takes time to mature biologically and minimize disturbances to its biological properties is best, but you still need to wash once in a while. Otherwise, the fish gets alot of problem as they are live, sleep, breathe, eat and poo in that water contained in a fixed limited dimension.


(This post was edited by water on Apr 23, 2008, 11:21 AM)


scinomore
Koi Lover

Apr 23, 2008, 11:23 AM

Post #6 of 18 (1646 views)
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Re: [water] Advise needed on filter arrangement [In reply to] Can't Post
thank you very very much Cool


blim
Koi Lover

Apr 24, 2008, 10:22 AM

Post #7 of 18 (1596 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
In Reply To
the overall scenario..

I see that your pond will be collecting rain water from the roof. You may have a potential problem if you have lots of rain in where you live.


scinomore
Koi Lover

Apr 24, 2008, 12:56 PM

Post #8 of 18 (1575 views)
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Re: [blim] Advise needed on filter arrangement [In reply to] Can't Post
i live in alor star, north of malaysia. yes we do have heavy rainfall especially between apr. - oct. the idea was to reuse the rainwater for fish pond.. and the location is the best for shading as it only get direct sunlight between 12 - 2 noon.

i do not know exactly what problem related to rainwater for fish pond. a friend of mine advised to put some corals in my filter chamber to balance the pH if acid rain occur esp. in early rainy season. hope you could advise me more...


ouch
Koi Lover

Apr 24, 2008, 2:18 PM

Post #9 of 18 (1557 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
The rainfall running down your roof into your pond is bad all around. It can cloud the water by collecting junk from the roof which increases the load on your filter and reduces your ability to see your fish, it can cause water quality issues with pH swings, and can potentially introduce harmful chemicals into the pond, which can kill your fish and beneficial bacteria.

I certainly would not recommend using rainwater in the pond, but if you have no choice now, I would fill a bucket with water running off the roof next time it rains, and test its parameters to compare to your ponds water parameters. This way at least you know what you need to do to correct any changes.


water
Koi Lover

Apr 24, 2008, 3:34 PM

Post #10 of 18 (1552 views)
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Re: [ouch] Advise needed on filter arrangement [In reply to] Can't Post
After a dry season, the roof is very dusty. Rainwater from the roof after a dry season brings down the accumulated dust. Sometimes, when you collect the rainwater in the pail, you can see the settling dirt and hence, the water is cloudy. Also, the PH swing due to rainwater can be bad, that's why you need coral or oyster shell to buffer the PH. Also, rain water, if you stay close to an industrial estate or industry producing fumes and dirt.... is particularly bad and the chemical that is carried in the air is an unkown property. Suggest you monitor and dilute the water by adding fresh water to the pond periodically.

Other than that, good luck to your new pond. DO keep us updated when the pond is ready and filled with water. Add fishes SLOWLY and give time for the filter to grow and mature. You will get green water for sometime for a start... but it will clear once the filter kicks in. Adding a UV will help for a start.


scinomore
Koi Lover

Apr 24, 2008, 4:34 PM

Post #11 of 18 (1535 views)
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Re: [water] Advise needed on filter arrangement [In reply to] Can't Post
thank you ouch, water... eventhough my house in town center, but alor star is a small town surrounded by paddy fields. its a clean and quiet town. no heavy industry near my house..

i'll proceed to install water return as attached pic. this weekend and will post / update the progress for further comment/advise. i'll keep your advise along...


(This post was edited by scinomore on Apr 24, 2008, 4:58 PM)
Attachments: water_return.jpg (70.8 KB)
  water_return_idea.jpg (77.1 KB)


water
Koi Lover

Apr 24, 2008, 4:55 PM

Post #12 of 18 (1529 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
Lucky you. SOunds like a nice place and paddy field, you must have alot of ground water... Ground Well water is the best for koi pond... well, next to mountain stream water in the Japanese farms..

Good luck and if one day, I find myself in Alor Star - will come by and say hello. Keep all of us updated.


scinomore
Koi Lover

Apr 24, 2008, 5:11 PM

Post #13 of 18 (1526 views)
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Re: [water] Advise needed on filter arrangement [In reply to] Can't Post
you all are welcome to my house, just drop an email to scinomore_at_yahoo.com to inform so i can well prepare to welcome you aboard Sly ... you will get my number in the email


Abangk
Koi Lover


Apr 27, 2008, 1:19 PM

Post #14 of 18 (1455 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
Hi Scinomore..

As you do not have bottom drains, you may consider this cheaper system:


As the pump is placed at the last chamber, the flow of the water is more to natural flow, therefore lets the level of the settlement chamber same level as the pond floor to ensure the debris can move smoothly into the settlement chamber. The brushes are meant for blocking the floats and same to Jap mats. The Skippy system must have proper air bubbles to house the good bacteria. Put a gap below the jap mats and the skippy to act as a secondry settlement for the finer debris. This arrangement is very similar to mine. Good luck...

Best regards
Abangk

(This post was edited by Abangk on Apr 27, 2008, 1:38 PM)
Attachments: myfilter_abk.jpg (55.0 KB)


scinomore
Koi Lover

Apr 28, 2008, 8:02 AM

Post #15 of 18 (1427 views)
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Re: [Abangk] Advise needed on filter arrangement [In reply to] Can't Post
thank you abangK, i really admire your pond and the filter system. i did asked you before about the skippy. i found the system best suits my need in term of maintainance. the only thing, i'm not sure if my filter large enough to use skippy? my filter size about 10'x3'x2'd or 1700 liter compare to pond volume at 7000 liter. the nett area left for skippy or other type of bio sytem is only 4'x3'x2'd or 680 liter.


(This post was edited by scinomore on Apr 28, 2008, 8:26 AM)


scinomore
Koi Lover

Apr 29, 2008, 5:16 PM

Post #16 of 18 (1372 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
hi all,
i've decided to open a blog at http://scinomore.blogspot.com/. I wish i could share the joy of koi keeping with all of you via this blog. You are welcome to my blog and leave some comments there.


sunshinekoi
Member


May 1, 2008, 1:08 PM

Post #17 of 18 (1286 views)
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Re: [scinomore] Advise needed on filter arrangement [In reply to] Can't Post
Hi Scinomore,
I saw you are using coral rock as a media for buffering pH. There are a lot of threads mentioning it is a prime suspect for one of the stubborn disease, Hi-kui. A disease that eat hi away. I would suggest you use oyster shell or other media instead for pH purpose.

As you mentioned you are using rain water for the pond, it is best as per advise in the thread to check the rainwater parameter. I wouldnt use the first 15-20 minutes of water coming down as it is most likely polluted.

Best of Luck

Sunshine Smile


scinomore
Koi Lover

May 3, 2008, 11:52 PM

Post #18 of 18 (1219 views)
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Re: [sunshinekoi] Advise needed on filter arrangement [In reply to] Can't Post
hi shunshinekoi, thank you for the advise. i considering put gutter to divert rain fall direct into my pond. regarding ph buffer media, i will check the thread before decide which one best for my pond interm of economic and availability.

 
 
 



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