Hammer and other corals not doing well

[Kehaulani]

So as you can see my hammer looks horrible. Wednesday everything in my tank looked great. Thursday, I woke up to an empty sump and my salinity was high! I added water and fixed it. But yesterday and today my hammer, leather, and zoas have been either closed or look really rough. My hammer has some brown spots on it. Not sure if it's normal as I didn't notice it before. Do you think it's just due to stress? All my water parameters are good. The a/c went out on my house and is being fixed Monday. So I'm not sure if it's the stress of the salinity spike or the house is getting too hot or both. I'm worried that my corals will die if I don't figure it out. Any suggestions on how to make them better? Thanks in advance.
-K

 

[KJ]

Your frag be ok take time to recovery from stress. Look not to bad keep your tank stable and you be just fine . Sorry for my English KJ.

 

[KJ]

Post yours parameters?

 

[The Kahnasaur]

Salinity spikes can be brutal. It's unlikely the temp unless your tank is getting higher than 84-85 degrees or changing very quickly. Change from a hotter air temp will be gradual.

 

[Kehaulani]

OK so it's mostly the salinity. That's what I figured. It was getting warm about 88°. I lowered the heater to 80° so if it does get warm it's not too bad cause it was getting pretty high. My parameters are
nitrates 0
Nitrites 0
Ammonia 0
pH 8.4
My hammer is looking a little better today. Not 100% but I'll take it. My zoas still aren't all open.