Hello, i have a 46 gallon bowfront. I was running a fluval 305 and a whisper 2 hob, i was just given a fluval 304 which I installed today (replaced all sponges and media). I also have 6 live plants in there. I am not using carbon due to one fish being a TRUE Parrot Cichlid. I always heard there is no such thing as too much filtration but with the 305 the 304 and the whisper 2, My water is being turned over almost 16 times an hour. Thanks