Hello! It's been a while since I've been around, and I just acquired a new SW tank. My LFS closed down, had a big sale, and since I worked there for a while I got a bigggg discount on everything. I got a 20 long with a Penguin HOB, elite heater, about 10 lbs of live rock, 4 blue leg hermits, around 6 narcissus snails, 8 turbo snails and a domino damsel. For some reason it keeps automatically putting me into italics so bare with me. Anyways, I also got a AP saltwater master test kit, calcium test, hydrometer, Aquavitro Alpha and some tetra marine flakes. The problem is my damsel, it's back fin looks absolutely awful and it's losing some color. I thought it had ick so I tried a freshwater dip about 6 hours ago and it's fin keeps looking worse. It's acting normal and eating like a hog. I have a few blurry pictures for you. Also, any recommendations would be awesome. It's FOWLR at the moment, but I'd love to have some easy corals. Water parameters are as followed. Ph- 8.2 Nitrate- 40 ppm Nitrite- 0 ppm Ammonia- 0 ppm Calcium- 440 ppm As for lighting, I have a double Hagen GLO with a marine glo and power glo bulb.