My tetra whisper is going out, very loud, I have 2 filters on the tank (55 gallon), an aquaclear 110 and an aquaclear 70, I know air pumps aren't a must have but I do like the extra agitation, I was looking at another tetra but for my size tank the one I had was for a 40 gallon the other one I was looking at is for up to 150, then I saw the fluval q2 but just curious as if anyone else has any other recommendations.