I have a 29-gallon tank with 20 pounds of live rock. I added a Clown and Royal Gamma several months ago and had no problems. I added a Leomonpeel Angel & an Anthias (I believe a Dispar) about 3 weeks ago. All was good until last week when the Lemonpeel developed red blotches on both sides. The blotches increased and he died a few days later. Now my Gamma is acting different. He hasn’t eaten in a 2 days and just stays at the bottom of the tank under a rock. He’ll come out occasionally, but he looks like he is on his way out… Any ideas what happened to the Angel or what is occurring with the Gamma? My Nitrites are 0, Nitrates between 20-40, and PH is between 7.8 & 8.4.