Clown Fish help!

[DACJ]

From what I observed, it seems to be "Brooklynella hostilis"...but I can only find so much information about diagnose and treatment online, not the cause of it...Since both has passed away already....I don't think treatment method will do me any good....
Anyone can explain to me what might have caused it?

BTW!!!!!!!!!!!!

More bad news, as of today, 2 of my skunk cleaner shrimp died.....of HEAT! ....only one left...i hope it's the female...
I've been putting the top-off water in the fridge and adding it in the evening trying to cool the tank, i got a fan blowing at the tank with max power...but the tank is still way over heated....I can't tell you how far up it is.....because my themo only read up to 86...and I don't see any colors on the LED thermo...so it's way way high....even I can't survive the weather....all the corals has retracted....fully....fish seems to be fine...I hope nothing more will die....gonna try to put some dry ice in bag and place it in sump to try cooling...can't afford chiller....I don't know man....summer sux....