Quote:
Originally Posted by kissman
I agree with this. However its not easy to do. I am trying to control my level of PO4 and NO3 with my skimmer. If the PO4 gets high enough i will cut on GFO to knock it back down
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I guess the question I'd ask is why is the testable PO4 (inorganic phosphate) rising higher than your skimmer can handle via reduction of nutrients?
I would bet good money that you can eliminate your use of GFO by simply increasing your detritus removal.