i set up a small 10 G test tank to see if i could keep a planted tank. everything is growing quite well, but in the past couple weeks, i started getting massive amounts of algae growing all over my plants and glass. started looking into a UV sterilizer. i know it wont kill any algae that's already growing on the tank, but if i start with one would it prevent algae growth in a new tank? if not, is there a better way of controlling the algae growth?