DOH!! LOL
So you have brown algae, eh?
When was the tank set up, when did the cycle finish and what do you have in it? Are you using RO/DI water or tap? Have you checked your perameters lately? Nitrates, Nitrites, Ammonia, Phosphate, silica
When my 110 finished its cycle I got a really bad brown algae bloom...im talkin like a layer that was 6 inches thick...took 90 snails, 90 hermits and 2 green lettuce nudi's, 1 tiger cowrie and a lawn mower blenny 3 days to clean it up.
I noticed that my phosphates were fairly low, .3ppm, but the silica was 2+ppm...once i cleared up the silica i didnt have any more blooms....