Backyard Aquaponics
A place to discuss aquaponics

HI all new too this site freshly retired so built myself a little pond.

My question is how many koi can I put in it, bearing in mind how quickly they seem to grow from the reading

I have already done on the subject.

I live in Thailand so the cold is never an issue , I have made a 1670 litre pond . which I am running a

beginners set up of an Oase Biosmart 7000 set

I am thinking of 5 to 7 koi , is this too much

And also should I keep the filter box with uv light and pump running 24/7, or just run the pump and no uv

light at night

Any help would be most welcome ,Thanks

Welcome to the forums Saintfiw

Thanks for that ,Scotty

I would not expect 5-7 Koi to be too many for a pond that size, but supportable bio-load depends more on the filtration's ability to keep the water non-toxic.

How long does it take for your pump to flow all of your water through the filter box?

Pumping 24/7 seems like a good thing to me, although maybe running the UV part-time works as well as 24/7? If the UV can kill all the baddies in one pass, I'd think there is no pressing need to run it 24/7. If it doesn't kill everything with one pass, then perhaps you can calculate how many passes you'd expect it to take to get rid of whatever you use it for and adjust the on time for that?

--
Sam

Thanks for the reply all info is good ,thank you

may be best if you check with one of the many Koi forums where people might be familiar with that type of filtration and able to provide koi pond specific recommendations. Sam has one important point - it depends on what bioload that filter can support.

If you wanted to go with aquaponics providing the filter there is no reason you could not carry a lot more fish than that and grow some vegetables or plants as well. The principle is the same.

1670 Litres could easily carry 20-30 koi provided filtration is good.
A safe stocking would be 10-20 and you would get this quite comfortably in a pond of that size.

I have previously converted a 1000-1500L pond (parents) from a normal expensive pond filter to a set of large planter tubs with normal plants in it using aquaponics principles. It worked very well and ended up being much cheaper to operate.

If you want to go down this route we can help you out here.