jus curious if its possible to have to much water current in an arowana tank? they seem pretty excited about it but will it become an issue? and another thing, if im using a pond pump as a power head because thats basically what it is, is this thing gonna be causing a bunch of heat that could possibly heat the water in the tank above anything dramatic? dont wanna cook my lil friends jus for some current. my water was to "still" with only a filter in it. hardly no movement, thanks