Just to clarify again, my rocks are not all 3 years old, only 1 or 2 pieces are, the rest are about 6 months old. The "old" rock is probably only 10% of my total display rock.
The algae is also growing on some of my clams, and its also growing on colonies themselves. Its not limited to the rock itself. It is also only found on the top of the rocks, not on their undersides, nor in any of the caves.
I already have quite a few algae eating creatures, and don't feel that I could add to it without compromising my bioload.
I have actually added new rock to the system, as in it was completely dried, and bone white. I cleaned it, then added it to the tank, it was also covered in algae rather quickly. Do you think that this new rock being covered in algae is a result of my older rocks?
I think first I'm going to try to raise my magnesium levels like in the Reef Central thread. Even though my algae is not briopsis, I still think its worth a try.
After that I would probably consider new rock, but because of my space constraints I can't cook it.
So your thought is that phosphates are getting into the system from my old rocks?
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