Algae problems, Cyano or Diatoms?

[reefwars]

Originally Posted by Humpty

Ok so should I blackout the main tank and leave the light on in the sump for the chaeto or black out both tanks?
I know the blackout works amazing in planted tanks but will the corals handle the blackout ok? I have candy canes, lobos, favias, hammer, frogspawn, mushrooms, and a few zoas.

most likely dont have to go to that extreme , but just to not turn your lights on for a day ....everything else stays the same

its not a bad case so no need to pull out the big guns unless it doesnt go away