I answered this in post 1976.
- Phosphorus exists in two primary forms in seawater: as inorganic phosphates, especially orthophosphate, and as organophosphate forms. Orthophosphate is readily taken up by algae and is active in inhibiting calcification. The organic forms may or may not be available to organisms such as algae. Aquarists can readily test for inorganic orthophosphate using a standard aquarium phosphate test kit, but testing for organic phosphorus compounds is considerably more tedious. Moreover, if there is an algae problem, then the algae may be consuming the orthophosphate as fast as it enters the water, thereby masking the issue. Consequently, many reef aquarists may not recognize that they have a phosphate problem, only that they have an algae problem.
No I read this, I think we said its just coming from the rocks
Not yet, its not that old, maybe a few months ago? and the TDS meter is reading 0.00ppm again so it may have just been a fluke when it was at 0.01ppm. I feed every other day probably. And I don't think that's why I have algae problems. I think its the tank going thru its phases actually. I mean you may be right, it probably is contributing to it but its not the whole reason. That and the rocks.So your RODI media hasn't been changed? How often do you feed? These all are reasons why you have algae problems.