Hi there, I have two little Duncan colonies (same types of Duncan) in my nano, and have had them both for about a month. They're right next to each other and are basically treated the same way—similar flow, light, target feedings, etc. However, one has recently started to close up and lose some of its vibrance, while the other Duncan—and all other corals in my tank—is still doing great and is happy. They both looked exactly like the "happy" one 4-5 days ago.
My water parameters look good, I don't see any tissue receding from the "problem" Duncan, I don't notice any pests, and I only have 3 blue-legged hermits, two clown fish, a fire goby, and some snails, so nothing is eating or nipping at it.
Any suggestions on what could be going on? Maybe a parasite or something? I was thinking about maybe giving it a dip in Coral Rx and seeing if that does anything, but also don't know if it's just going through a phase, or might do this when more heads start to grow?
My water parameters look good, I don't see any tissue receding from the "problem" Duncan, I don't notice any pests, and I only have 3 blue-legged hermits, two clown fish, a fire goby, and some snails, so nothing is eating or nipping at it.
Any suggestions on what could be going on? Maybe a parasite or something? I was thinking about maybe giving it a dip in Coral Rx and seeing if that does anything, but also don't know if it's just going through a phase, or might do this when more heads start to grow?