Why is this acan unhappy?

[Uncle99]

I only started keeping coral about 3 months ago and this was one of my first. It has grown well for me. It had 3 heads and is sprouting 6 more around it. I am not certain it is an acan I got it from a LFS. It is normally opened up and loving life but I just arrived home from work and it is unhappy. My other coral looks fine in the tank.

Recent parameters in picture. I have been adding corals, switching from red sea B to BRS Soda ash and generally adjusting doses. I also added an AWC about 3 weeks ago. I am only doing 5% weekly now.

I'll be running more tests in a minute but I think they will be roughly ok since all the other coral are ok.

I think I see a torch right above.
If so, being stung.

 

[Schulks]

I think I see a torch right above.
If so, being stung.

Thanks. I think I got lucky and the torch never reached the acan there but that pic/video was from a few weeks ago. I moved the acan to the other side of the tank and that torch is at a friends healing in his amazing reef. lol

 

[Schulks]

You’d be surprised how much they can eat.

Typically I feed really well every other day, unless the acan looks like it’s declining. Then I’ll feed daily

By really well I mean feed, wait 10 min and if it opens again, I’ll feed a second time

I did feed them all twice last night but they hadn't ate in months so maybe I'll feed again today.
Do all the heads share a stomach? lol

 

[VintageReefer]

I did feed them all twice last night but they hadn't ate in months so maybe I'll feed again today.
Do all the heads share a stomach? lol

That’s a good idea and I bet they were happy!

Second question is something I’m not sure of and have asked myself many times. I think “maybe”. I try to feed every one but the heads on the side are difficult and tend to drop food until the get more flat. They did grow from the main colony so I do think there is some nutrient sharing going on