Both the bulbs are only a month old. I have been trying to do a pwc at least once a week of about 5 gallons. Over the last couple of days I have done two pwcs, 10 gal each. So In total I have done about 20-25 gal water change over the last week. My tank is looking dramatically better with the water changes and everytime i do a water change i try to get as much of that stuff off of the rocks as I can. It is not coming back at the rate it was last week so that is great. I think I will just continue with your guys' advice on feeding,lighting, and pwc's and hopefully I can kick this stuff. One other question though, if it's in there to begin with is there any way of completely removing it from the tank? Or just keep maintaining the above and it should never come back?