how long have you been dosing prodibio im only dosing the reefbooster.I dose Prodibio and have xenia in my tank with great results. I like to try to keep my nitrates at 5 or 10 and monitor it closely. I do not do frequent water changes and dose the tank with essentials that are lost over time. I have definately seen a difference in there appearance when the tank is totally clean vs. a tank that has some nitrates present