(My first post so please be gentle!) My 46 gallon tank finished cycling (fishy cycle) about two weeks ago. It is now 6 weeks old. I have three 2" silver dollars and seven 1/2" tiger barbs. My water parameters at this time are 0 ammonia, 0 nitrites, 0 nitrates and 7.6 pH. The tank began to become grey and cloudy about a week ago. I think that I was 1) overfeeding at bit and 2) keeping the light (60W) on too long which was about 11 hours a day. I can see small floating specks floating and suspect diatoms (sp?) due to the available food and light. From searching this amazing forum I have both cut back on the food and the light. For the past three days I've only had the light on while feeding twice a day. I think that I'm finally figuring out that these little fishes are hungry no matter how much I feed them so I just have to learn to control myself! I have a Marineland C260 canister filter and have been basicly leaving it alone since it's flowing well. Oh, yes, I do have a large piece of Malaysian driftwood in the tank (that I boiled) and natural small river rock bought from the lfs. Is there something else I should be doing to eliminate the cloudy water?:huh: