eel storage question

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I use to use a keg bucket, I think it was like a 25 gallon container,for aeration I use a Fluval 303 canister "biological/mechanical filter" & a 700 Natural life air pump.With the two of these I was able to keep 2-3 dozon of eels alive w/ 1 water change a week w/ minimal casualties.
On hot days I would put the filter in a cooler and packed it w/ ice then wrapped the cooler in a thick wool blanket I also wrapped the bucket in R-13 insulation,now looking back I should of kept the whole contraption in the basement.
Don't forget if one eels dies you gotta get it out of the tank cause it'll break down quickly release toxins & slowly kill the rest.

I had a pic of my old set up,I couldn't find it,sorry.


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