Hello all,

Well it's been a while since I last posted. My tank recently has started to get the redish brown stuff on the sand. This happened when I first started the cycling but cleared completely up and now about a month later it's back. It's only in the areas where the light hits. Shady areas are clean and white. Just wondering if maybe I should get a small conch snail or what? All I have is a cleaner shrimp,red firefish and two nerites and to nassareous snails. What would help? All the levels in the water are good.

Thanks,
monica