Help with declining zoa health

[reef’r]

Over the past couple of weeks I’ve noticed a lot of my Zoas have began to decline. Water parameters are in check the only difference is it appears I have some returning Dino’s. I’ve had Dino’s on my Zoas before however they would just close up, not wither away like they are appearing to do now. Any help will be greatly appreciated, here’s some pics

I have some sunny d and toxic tonic Zoas up high on the rocks on the opposite side of the tank that are doing a lot better and don’t seem to be affected like the utter chaos and the punk rockers. The everlasting gobstoppers pictured next to the Acan come and go, and the king Midas do the same. I’ve looked late at night and have not seen any thing bothering them, I do have lots of those tiny white snails (forget the name) that come out at night however they have been there and not bothered the Zoas previously. Need help please! Do not want to loose all these guys

 

[PharmrJohn]

You're gonna want to list out your current parameters. Also what kind of lighting ya got as well as age and size of tank.

 

[reef’r]

You're gonna want to list out your current parameters. Also what kind of lighting ya got as well as age and size of tank.

Excuse my child like handwriting lol light is an xr15, peak is 59%

 

[duran760]

I would Dose phosphates or feed heavier. Tank is to clean. Mag seems kinda low aswell. I tend to keep mine at 1400-1480.