According to KOIVET.com, the general rule is 1" of fish to 10 gallons of water.

so, let's say my fish were all 20", I would only be able to have 10 fish. great!

thanks for that.

there are other factors then just the number of fish per gallon. Size of the filter and how effective it is plays a major role, also the quality and amount of food you feed them plays a big part. Other things like aeration and circulation are also important. Lastly you need to factor in the amount of time you are willing to spend to maintain the water quality. So saying 1" per 10 gallons isn't accurate and can lead to trouble. In some ponds you can double that, it others its half.

Like surfhead said....your stocking levels depend greatly on your filter system. Can you tell us more about your pond's filter? and do you have rocks in the bottom or not? Experienced koi keepers with good set-ups rarely exceed 1 fish per 300 gallons, some even go with 1 fish per 500 gallons or 1 per 1000 gallons. But their goal is to grow very large show quality fish. You could keep 8 to 10 koi in your 2000 gallon pond, IF the filteration is adequate for that amount of fish.

I have a 2000 gallon pond, with two pumps, one is 2000 gph and the other is 750 gph. The filter currently is being fixed and being made better but is should be back up and running this weekend. I have a UV light running right now and a mini pump/filter attached which is cleaned everyday to keep things clear.

It all depends on the filter and its ability to do two things. convert all the ammonia in the pond into nitrates and second remove all solid waste (muck) from the pond. the more fish you have and the more you feed them the harder it will be for the filter to do this.

I have 12 in my 3500 gallon pond and I think its near capacity.. I have seen others like Joanne that have more in a smaller pond but I think their water and filtration is better than mine.. I would think in my pond with my filter and pump and extra air bubblers I could not add many more.. maybe 1-3 tops..

Here is a link that might be useful: My pond

Sorry wrong link...

Here is a link that might be useful: Koi pond pics

Sorry

Here is a link that might be useful: Koi pond pics

I really like your kin matsuba, and you platinum. Thanks for the pics too! I haven't seen a kin matsuba like that around here in canada. the closest thing to it is my ki matsuba, but his markings aren't that great...

thanks for the info on how many I should have.

My pond hates black.. all black spots on my fish fade or vanish.. he looked good at first but now he looks like a ghetto fish.. still love him but he is not pretty like when I first got him.. in fact the tancho that you see in my pics was actually a showa.. it lost all its black spots and now he looks like a tancho.. red does really well in my pond though.. I gave up on buying showas with black spots.. will stick with others

Fong,

Where abouts in Canada are you?

I'm in Calgary

I'm in Ontario.