i couldnt figure out why my 180 was alwaqys so cloudy i have 3 aquaclear 110 i use the python gravel vac to change 40-50% water every week. i also use the diatam xl filter every month to polish the tank my tank isnt overcrowded nor the fish overfed. i couldnt understand the constant cloudiness so i removed all the gravel and used large slate rocks to line the bottom of the tank....the result crystal clear water that seems drinkable i didnt realize how much dirt and other crap gravel holds. has anyone else experienced this?



