+1 except I'd ditch the 55/75. Don't get me wrong, I own 3 of them and they are awesome HOBs for the price, but AC just can't be beat...keep the two AC's on there, and scoop up a cheap canister, any of the ones mentioned are great, I'm personally using an FX6 but thats because PETCO ran a stupid great deal on them and I got one for like 150 bucks off the regular price. Throw in some Purigen in one of the trays and I bet your water clears in a weeks time easy.
Thanks guys. I just did a 50% water change last night, and cleaned out all my filter intakes and impellers. Tanks crystal clear now. lets just see if it stays this way. 150$ off the fx6? You made out great!! I still am not happy with the 55/75 though. Still wanna throw somthing stronger on there. No such thing as over filteration when it comes to a tank of Oscars and a Dempsey lol