Started my first ever SW tank at the end of May/beginning of June, began adding livestock mid-July and think I am maxed out on fish. 55 gallon with 2 clowns, a diamond watchman goby, blue-green chromis, royal gramma, yellow coris wrasse, flame angel and yesterday added 3 springer damsels to round things our with some nice blue color. Also have CUC with cleaner, peppermint and fire shrimp, various snails, many hermit crabs and some emerald crabs. So far things seem to be going ok, yesterday my nitrates measured at 15.3 with a newly acquired Hanna tester. LFS guy says I am ready for softies, but I'm going to give it a couple more weeks to try to improve on nitrate levels and algae, which is not horrible, but there is some on the rocks and glass. Wanted to get some comments for this community on that. Not overly concerned as it just feels like the normal progression for a new tank. Some brown stuff which I figure is diatoms, and a little bit of green. I'm hoping the pinkish/purple stuff is coraline, but not entirely sure. Any thoughts are welcome.