Ohhh. I was talking about my hammer coral LOL my bad. My acan I figured out. I have it in the back of the tank. It’s very happy now!! It’s my hammer coral I’m struggling withMight be placement then maybe try putting on sand bed or bottom of the tank in a corner or somewhat of a shadow area. This is where mine is at compared to lighting and other corals basically by itself on the barebottom half of my split frag tank.