Hey R2R… second time posting here so super excited to hopefully learn more!! I just recently bought a six line wrasse from my LFS for my 13.5 gallon tank (before you come at me, I know it’s a small tank but I plan on rehoming him as he is still tiny.) my tank is also established and has corals thriving. regardless, he was doing fine until this morning when I noticed his fins had seemingly rotted, and he is spiraling around and has what appears to be a swim bladder issue. I immediately moved him to a hospital tank and added rally reef to help with the fin rot. He’s just not looking hot, i can provide images:
What else should I do to help this guy out, I fear time is not on my side…. Thanks!!