so i have been battling this algae that looks like moss but is fine and very green and pretty but not on my plants. then i bought some cherry barbs, i did notice that the algae was going down and not growing as fast, and i didn't think anything but that i was winning the battle. One day i was looking at my cherry barbs and i noticed that all of there poo was green, so i started to watch them and sure enuff they would graz all day on the algee. so cerry babrs=algae control