coral receding

So, I am loosing tissue on a large chalice coral in my IM15 G. Nano tank doing 10% weekly wc. I have a crappy light and the LFS kept the chalice in roughly 100-150 par. Mines at maybe 50. I am doing my water changes but the chalice seems to get worse and worse every week, any tips on care...

Use to have this coral similar to looking like this but bigger (First picture). But has unfortunately had a rough patch now looking a bit like this When i bought is around what it looked like in the first pic and the rest is current (Sorry they aren't the best pictures) Just started dosing it...

Hey everyone, My trachy is seemingly receding on one side even though it has been doing well for quite some time now. I don’t have any shrimp in the tank and don’t know why it would bail out on this side like this. Does anyone know why this could be happening? Thank you

I bought a guys livestock because he was shutting the tank down and in there was this torch. Unfortunately it's definitely receding. Color is still good and it'll still eat when directly fed, I mean as much as a torch will. I guess I'm looking to see if anyone has successfully saved a torch...

Hi, I am pretty concerned right now. My 5 head Pink Hammer I got about 1.5 months had lost one head last week. I cut off the head, and dipped it, but it continued to worsen and died. Then recently I noticed my little octospawn I got at the same time is starting to show a bit of skeleton. It...