I have a 100 gal fish tank that is plagued with brown algae. Twice a month I have to do major tank maintance on that tank; consisting of taking every rock and decoration out of the tank and scraping and scrubbing the algae off, as well as vacuuming the subtrate, filter maintance, and a 75% water change. I expect to do regular tank maintance with the filter maintance, vacuuming, and water changes, but this algae has to go!! I have peacocks, brichardis, a raphael cat, and a spotted cat. Are there any algae eaters that would take care of this brown algae? How many would I need for that size tank? Any advice would be deeply appreciated!