Hi, I'm new to the hobby and have had a 33 gallon tank set up for about 2 months, 1 have 1 6-line wrasse, a serpent star, 10+ hermit crabs, and about 30+ lbs. of live rock. My water quality is fine, 8.4-8.6 pH, 0 NH3, 0 NO2, and <5 ppm NO3. I have a protein skimmer a UGF with 2 with 2...