Are you using RO water or distilled? Since the Hurricane they may have added other or stronger chemicals to prevent polution of drinking water. Severe storms like the Hurricane can easily wreak havoc on our water supplies, Wells included. Keep a close eye on you parameters as fish like paros probably thrive on stability of the enviroment.
Call your water company and ask if they have done anything different since the storm.
I too am on the East Coast but stay in touch with our water company whenever we have a weather crisis.
From the reading I have done so far 86f temperature might be pushing it for paros?