I use a
UV sterilzer. Coralife Turbo-Twist 12x-36, spliced into the output tubing of my Fluval 404, for my 75 gallon tank.
Best decision I ever made. Since its install I have never had a problem with cloudy water of any sort, algae growth has slowed considerably, the fish seem to do much better overall, and I have far fewer problems with opportunistic infections.
Most people around here would probably shoot me for even mentioning this out loud... but I do not even quarantine new fish anymore. I am not encouraging you to do the same if you end up getting a
UV system, but that should tell you how much confidence I have in its performance.