So I just picked up two good sized mated pair of lightning maroon clowns I had two regular ocellaris clowns but the female ended up killing my male so I surrendered the female to my LFS where I got the maroons. Anyhow. Got them in the tank acclimated all this and that Immediately started to host at the back where my overflow is. They keep staying at surface w/ lights on and off. I have great flow from return pump and power head. So I wouldn’t think there’s lack of O2. I keep zoas frogspawn mushrooms and a hammer coral they are all fine params are where they need to be. I guess I’ll watch them over the next couple days. Gils aren’t opening wide by any means no noticeable fish diseases that I can see. They where pretty close together in the LFS tank by themselves. So maybe just getting used to new tank new area. Just throws me off on the swimming at top in one place.