yep, i heard about the gizmadoo. sounds interesting, but i'm kinda skeptical.

what temperature(s) is your tank? how many gallons? what kind of filter do you have on it? some filter media can be rinsed and reused a few times if your problem is cloudy water/clogging. just use cool water when you rinse -- you don't want to kill any of the good stuff growing on it.

i may not be an expert, but i still probably know too much. i'll do my best not to let my friendly advice turn into lecturing. ;) i just love fishies.