Okay, I know I have alot of questions but I'm still dealing with this Nitrate problem. I have a 55gal with a wet dry, pump is 500GPH. I have about 2" of LS.(getting more) about 40 pds LR(getting more) I have 1 regal tang(about 4ins), 1 foxface(about 6 ins), 1 coral beauty, 1 firefish, 1...