Well I figured I'd try this stuff out and see how it goes. I've been dosing vodka and vinegar for the past 9 months on and off and I can't keep my po4 down below .5 all my corals seem fine and happy even my stonies so I'm hoping this will bring my po4 down below .1 my nitrates stay around 1 with dosing. Even running po4x media and carbon and skimming wet wasn't helping. So turned off the po4x reactor today and started dosing. Instructions say not to run any other po4 media so well see how it goes. Chris at aquatic art started dosing it in his systems today as well so we should have some good insight on the product soon. I ultimately want 1 on my no3 and less than .1 on my po4 to bring out the colors in my corals.