Hi, I was wondering how many nerite snails I could fit safely in a large KK. It has a 10 gallon filter (baffled, still overkill :P) and a 10w heater. It is approximately2.5-3 gallons. I am using it as a platy fry tank. I thought that when there is no fish in there I can keep the snails in there to help keep the cycle going.