One thing with the phosban, I recomend adding that slowly. Start at half the recomended doseage and increase from there. Anytime you rapidly change water conditions you can stress the inhabitants in there already.
A lot of folks had issues when phosban and rowa first became popular here because they were adding full size phos reactors and doing everything they could to go super low nutrient ASAP and lost a lot of corals in the process when their tanks rapidly cleared up. Just remember it takes time to battle it properly. Nothing good comes overnight, or even in a week or two
