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Home: KOI Talk: Pond Water Quality:
salt and bacteria

 





 


bboop321
Koi Lover

Nov 12, 2006, 8:28 AM

Post #1 of 2 (1082 views)
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salt and bacteria Can't Post
wow! what a great answer to my post. and you know what i agree with you. i think my biological filter is not working properly. my old pond is about 1000 gal. i am building a new one that will be 6500, and i want to do it right. i have 3 barrels that i am going to use plus a skimmer. dont know if i need 3 or not.
they will be trickle down, was going to go with jap mat, but read that plastic scrubbers would work just as well, maybe the boi balls are better. where do you get these? is lava rock the stuff you put on for mulch? if not where do you get the lava rock? also thought i would get the uv . thank you
any help is appreceated. bboop
does bacteria live on lava rock?


koiguyoz
Member


Nov 12, 2006, 10:53 AM

Post #2 of 2 (1077 views)
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Re: [bboop321] salt and bacteria [In reply to] Can't Post
Japanese Matting is best used submerged in water with aeration underneath the matting.
Apparently Japanese matting is similar to industrial air conditioning filter matts so you can try and find a supplier dealing in air conditioning matts if need be.


Bioballs can be found at any aquatic shop (even some online), or at some plastic extrusions company that make the bioballs in your country. Preferably, ask for a bulk discount if possible. Best to use google, or post a question regarding where you could get bulk discounts on bioballs.

I have never used plastic scrubbers myself so I can't comment on them. They are somewhat pricey in some areas compared to bioballs.

Lava rocks can be found at any gardening store or landscape supplier (buying in bulk, say 1 tonne is much cheaper than buying by the bag, although in this instance I'd recommend only a few bags to place at the bottom of the trickle down filter container).

Consider the UV an option, but when you've built a good biological filter that does work, the money that has been set aside for the UV would be best placed towards more lava rocks and prefiltration media. I believe 'Larz1' at this forum and 'josephineandgabby' both run large ponds without a UV light, as do I.

Keeping the koi fish load low, you'd probably can get away using three 55 gallon barrels.

So, when you're building your filter it would be like:
1. Prefiltration/settlement tank - create a vortex at the bottom of the tank, add in a reticulated foam filter pad or japanese matting (without aeration) to filter out debris.

output pipe into second tank, pipe goes down into the second barrel, water flows down to up

2. Biological filter - japanese matting with aeration or all lava rocks

output pipe to third tank, pipe goes to second barrel and you'd make a spray bar so water flows up to down.

3. Biological filter 2 - all bioballs.

Water exits pipe at bottom.

There are plenty of plans to adopt at the Filter section of the www.koiphen.com forum.

Take your time and good luck with it :D

 
 
 



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