Opinions on calc reac. and uv ster.

[TAZ]

No longer using one. Still on the fence if I am going to hook it back up

Now I am not sure if they are related, but when the UV was on my system I never had an issue with Algae. Since it has been removed, I am now in the middle of a Hair Algae battle. It could have been a coincidence that this is happening right now, and maybe something else cause the Algae. Does anyone know if a UV system could in anyway help control Algae outbreaks??