Unhappy Corals and tank

[CalvinH]

Any help appreciated! I got a new Acan Coral
A couple days ago and I caught a peppermint shrimp destroying heads on it. I removed the peppermint shrimp, did my weekly water change and everything seemed fine last night. This morning all the tissue on Acan had disintegrated and my War Coral colony and Montipora Frag and hammer coral frag were bleaching/freaking out! Tested parameters and below as follows. Only thing I can think of is I bothered my Palythoas or introduced something on my hands. I’ve attached photos but don’t know if I should just remove the war coral as it’s disintegrating rapidly. Any help of advice would be appreciated.

Salinity 1.025
Ammonia .25 PPM
PH 7.8
nitrite-0
Nitrate 10 PPM
PHOS-.25 PPM
Alk- 120MG
Calcium-500

 

[Gumbies R Us]

I would recommend doing another water change in your tank to remove any unwanted chemicals. What are you using to test your parameters?

What about the temperature of your tank?