Thanks Randy, your research and posts are top notch. I am not going to put that much stock in the shrimp but will use little less than I was on my last batch. Last thing I have to try is just build a large ATS but it seems the P dosing is helping. I have a Millie and Pink lemonade clearly loving the tank and showing very good PE at night. These 2 corals where dormant for practically 2 years and that is a good sign NO3 is likely dropping per day. My skimmer is producing 5 gallons of wet skimmate per day so I have to replenish that daily. which i am hoping is just removingIMO, most foods represent a pretty even balance of N and P, since they reflect the sorts of biomolecules needed by cells.