Yes the water changes were half my problem. I was using RO but not RO DI. Because of the amonia prob I had to do a lot of water changes. I don't want to cut the light on the fug because I have chelurpa. I have heard of it going a sexual and spreading into the tank. If it is diatoms will it just go away? What do you think about the urchin?

Will 4 small moonlights grow algae?