stocking koi in aquarium

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nitrofish1

Jack Dempsey
MFK Member
Jul 29, 2008
2,345
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Northern Illinois
how many koi would stock good into a tank that was around 100 Gallons, judging by if the tank is around 5 feet long?
 
ok quick question here, may fall under the pond forum but since were talking, if i put a pond in my garage, and it falls below freezing, do i have to have like a space heater so the garage doesnt fall below freezing? cuz dont koi still live in water during winter that is close to freezing or would a pond heater be the ticket?

i mean keeping room temp above freezing or keeping pond at a normal temp?
 
koi can live below the ice, considering they still have enough oxygen. the cold slowsdown their metabolism and they sort of hibernate. because im assuming inside a garage means that it will be above ground youll have to find a way to keep it from freezing. Ponds here have to be atleast 2.5-3 ft deep to keep the fish from dying.

unfortuantly im not one to discuss heating options with, im no enigneer. id go for the space heater though, so you dont have to be cold when your enjoying your fish this winter.
 
ok. yeah i would think that if i kept the air above freezing that the pond would not freeze over. i could prolly get a stock tub around 500 gallons for my garage then.... ive already had some experience with a 300 gallon tank in my high schools greenhouse with catfish and it was alot of fun. might have some koi in an aquarium for a fancy display then when they get larger move them into the "pond". provided i have space.

p.s. sorry about misspelling the title, normally not an issue....
 
nitrofish1;2114765; said:
how many koi would stock good into a tank that was around 100 Gallons, judging by if the tank is around 5 feet long?

Obviously, depends on the size of the koi ;) and the filtration, six 3" koi could grow out till next summer in it with a good W/D just fine.

nitrofish1;2114831; said:
ok quick question here, may fall under the pond forum but since were talking, if i put a pond in my garage, and it falls below freezing, do i have to have like a space heater so the garage doesnt fall below freezing? cuz dont koi still live in water during winter that is close to freezing or would a pond heater be the ticket?

i mean keeping room temp above freezing or keeping pond at a normal temp?

Heating the room keeps temps more stable, but you should still insulate the pond, especially double on the bottom as the concrete will absorb a lot of heat. 4" of Styrofoam (two 2" sheets) for the bottom and wrap the pond with fiberglass insulation (don't let it get wet!). Boxing in the sides will help a lot too.

Don't forget a full cover (sheet Styrofoam is great for this).

Aerate the water, that's an easy one.

Filtration... Biological filtration dies around 55*F so if your having a filter on it at low temps make it mechanical and do water changes (match water temp and remove chlorine before adding the water to the pond) to keep the bad stuff low.

And as soon as the ground thaws, start digging that new pond :D (well maybe you got a couple of years).

In ground ponds should be a couple feet below the frost line in your area (contact your local agricultural extension office to find out what it is).

Keep us posted,

Dr Joe

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i was more thinking about keeping the pond in the garage as a permanent residence. how about long pieces of 2x4's, in good number, to keep the tub off of the concrete?
 
If it was going to be permanent, I would skip a tub and just build the pond in. An easy way to go would be building a cinder block wall, lining it with sheet styrofoam, and pond liner on top of that. If it wont be too deep, you could probably get away with just stacking the blocks, but if it's deep, I would definitely recommend joining the blocks with either mortar or subfloor adhesive. Also, if you want to make it super strong (if you make it fairly deep), you can even fill the blocks with concrete and possibly rebar. Then, you can make the dimensions whatever you want.
 
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