yes, not effective enough, it just comes back. Even if i remove all algea, with peroxide scrubs the rocks in salt water afterwords, it just takes a month of it before it returns. And that is even when po4 is around 0.02 and no3 isent highter than 0.5... if i dont feed, my corals starve and die. It almost like the algea is more effective in taking in the nutricen than the corals is, and therefor ethey are starving to death.
i have tryed to lower my lighting schedule in hope, that the corals can better get what they need. light schedule went from 10 hours of light to 6 hours.