Home  

  Main Index MAIN
INDEX 		Search Posts SEARCH
POSTS 		Who's Online WHO'S
ONLINE 		Log in LOG
IN

Home: KOI Talk: Pond Construction & Water Filtering System:
Bio-Filter Design

 





 


Anonymous
Anonymous

Oct 29, 1999, 6:33 AM

Post #1 of 5 (2109 views)
Shortcut
Bio-Filter Design Can't Post
I currently have a 3 ton concrete pond in the garden and a separate half ton bio-filter box made of fibreglass. It's the usual fibreglass box design but there are no separate compartments within the box. Contents are pebbels at the bottom followed by alternate layers of matting and ceramic rings. With the aid of a uv light at the water-outlet pipes, I am able to get close to crystal clear water in the pond. Piping is arranged for the water to flow up from the bottom of the box to the water outlet pipes at the top of the box.

H'vr I've been advised that a 3-4 chamber bio-filter box would be superior as the sediment chamber can then be flushed daily. But I also ascribe to the philosophy that if it ain't broken, leave it alone.

The only issue is that I am unable to get close to crystal clear water without the uv filter.

Oh yeah, the pond contains 13 koi ranging from 20 to 50 cm in length.

Would thus welcome views as to whether I should change my filter box to the separate compartment type. If so maybe I should also enlarge it to say 0.75 ton - cannot make it large 'cos I've run out of space.

Cheers !


Anonymous
Anonymous

Nov 2, 1999, 2:36 AM

Post #2 of 5 (2104 views)
Shortcut
Bio-Filter Design [In reply to] Can't Post
Hi Melvin,

Should the space allow, please go for multi-chamber filter system that must allow fish waste at the settlement chamber be flushed out from time to time. This is the long term solution. Otherwise, you existing filter will be disturb each time you clean them. This will affect the pond water quality very much.

What you can do (assuming you have space) is to construct a new filter while still allowing this old filter to operate. Switch to the new filter after the new one is matured.



Hans Ham
Deleted

Nov 2, 1999, 11:07 AM

Post #3 of 5 (2104 views)
Shortcut
Bio-Filter Design [In reply to] Can't Post
Hello Melvin Tan!
See Pond constuction,under General guides,

Regards Hans


Anonymous
Anonymous

Nov 3, 1999, 2:27 AM

Post #4 of 5 (2104 views)
Shortcut
Bio-Filter Design [In reply to] Can't Post
Many thanks to Hans and James.

I've decided to get a new 3 chamber bio-filter box with separate flushing capability for each chamber.

In order to speed-up the maturing process of the new filter, I will use some of my existing ceramic rings from the old filter - these are relatively new, only one month old. In addition, I will place some pandan plants temporarily into the pond in order to control the nitrate level. Hopefully these measures should suffice.

Cheers


Mark
Koi Kichi

Nov 3, 1999, 9:01 PM

Post #5 of 5 (2104 views)
Shortcut
Bio-Filter Design [In reply to] Can't Post
Changing the filter may not be the only answer to your problem. You should also look into the total surface area whereby nitrifying baterials can develop and sufficient to combat the ammonia. I would recommend at least 30%. Cheers!

 
 
 



Search for (options) Back to Koi.com.my Main Page

  Disclaimer  Privacy Statement     
Copyright 2001~ 2002 Hileytech Sdn Bhd , All Rights Reserved.  
No part of the forum postings can be copied without prior permission from Hileytech Sdn Bhd and the Author of the Posting.
For comments and Suggestion, Please contact the Webmaster at koi@hileytech.com