So I decided to settle with two AC50 for my 60 Gallon setup. Now someone told me that I might not have enough agitation or might have dead spots om the tank. I'm thinking of getting a fluval q2 airpump and do a sponge filter or add a wavemaker either fluval cp1 or cp4 What should I do? Should I do both? And should I buy the fluval cp1 or cp4?