Dont be too quick to ditch the aqua clear. it has never failed me in the past. ive had success with an AC110 in tanks up to 90 gallons. they are not coslty and the parts(impeller) have never cracked or broke down on me. i do however use different brands of filtration media other than what is provided by AC. I use fluval ceramic rings for the biomedia they last forever!! dont crumble nd stuff =]]