another water clearity thread, but if anyone knows i'd be very appreciative....everytime i do a partial water change my water clouds up and NEVER gets clear again until weeks and weeks later after using "jungle" water clear. And that only lasts for about a week before it clouds up again. My 10 gal is always crystal clear i do everything the same in it...WHATS WRONG W/ MY 30 GAL!!!??? Its been cloudy for months now, water changes up to 50% dont make a diff. and i'm not sure if i should go more than that, ive tried 15% all the way up to 50 over the past months. HELP!