Have seen a few different forums in other sites about using the "best" filters, I run two tetra power whisper filters but have had some trouble. My filter cartridges get clogged rather quickly (less than 3 weeks) and need to be changed, i have tried rinsing them off with tank water but it only helps for 2 days or so. I have been looking into getting a cannister filter either a filstar or fluval 405. I also looked at the emperor filters (hob) as well. My tank water appears to have like white dust (possibly) off the cartridge always floating around, and it never seems to get sucked out, i just want what we all want which is sparkling crystal clear water. I am running a 55 gallon tank. Looking for your opinions.