ID Please

[Wayne]

Um you might need to take more extreme measure to get your algea under control, I would suggest removing your rocks one at a time and manually removing algea, rinsing it and putting it back. For long term removal you can start running GFO, Zeo, or NP pellets aswell as a CUC.

How old are you lights? How often do you do water changes? Do you rinse your food? What size of skimmer? This is going to help determine what is causing the algea.