On my driftwood, and also my rtc, I see possibly some little bugs or eggs. I looked at them with a magnifying glass and they just look like tiny little sesame seeds. Off white color and not permanantly attached to wood or my fish. They are very small and I can see no eyes or legs. I thought I saw a couple crawling around but it could be my imagination. Any ideas of what it could be or recomendations on how to remedy???