Hey guys Ive heard mixed feelings about this. They say you arent supposed to keep a crayfish with water too far over his head because they need to breathe air.... An air pump was suggested to me... but im sick of it. Would a 5" crayfish be fine in a 10 gallon tank w/ no air pump? Keep in mind im running a 10-gallon whisper filter... would that provide enough airation? I can add a 2nd filter of the same size if necasary.