I just started a 55gal tank with a 4 inch sandbed/plenum. 10 days ago I added 55 pound of LR from Premium Aquatics. I now have green algae all over the place. Some of it looks bubble algae but the majority of it looks like little ferns. It grows on the rock, the glass, and the sand. I put 20 snails and 10 hermits in the tank but this stuff is running wild. I use RO/DI water and run 55W power compact lights 12hr/day. pH=8.2 temp 80, Nitrate undetectable. I am pretty sure that this algae growth is normal but I would like some confirmation of that. In addition, what do I do to control it?