coral not opening

My corals have been recently not opening up as big as they did before. Nothing really changed. My GSP has been suffering since sponges are growing on it, but nothing happened to other corals. I tried manually removing the sponges but they were soft and wouldn’t come off so i was afraid to hurt...

I bought a new maricultured bali frogspawn 2 weeks ago. It was looking good for the first 3-4 days then it didnt open as big as usual. I have no idea what is causing it to not open. Plus, i have a small aquacultured hammer colony that was doing good for 2 months then boom one head wasn’t opening...

I have a 1 year old system with mostly soft corals. All the fish are doing fantastic as well as, the majority of my corals. However, my Duncan, candy cane, & xenia are not. The Duncan was doing well but looks like it's a goner. The candy cane & xenia frags are alive but not well. The xenia will...

yesterday i noticed 2 white spots that weren’t there before, could it be shedding?

Hello, I have had this torch for a couple weeks now and it’s not opening, is there too much flow? Here’s a vid:

I moved my tank from college back home. My corals have been perfectly fine. Now they won’t open. Can anyone help my and tell me why they won’t open? I’ll attach a pic. The water is cloudy because I just dosed calcium to make up for the low calcium. Calcium:340 ppm Nitrate: between 0-5ppm...