I will be going on vacation for 10 days and have nobody available to "fish sit". I was hoping to save on utilities while I'm gone by turning off the A/C unit in my condo for 7 days, then have a neighbor turn the A/C back on for the last 3 days I'll be gone. They will add a new 7 day fish feeder block and add some bloodworms to each tank. That's the best I can hope for as far as maintenance goes.
My two tanks are a 2 gallon with 2 Cherry Barbs and a 5 gallon with a Betta. I'm in Texas where the outside temperature will be close to 100 degrees for most of the time I'll be gone. I plan to turn off the tank heaters and turn them back on when I get back.
My question is am I risking the fish getting seriously too hot and keeling over for that week or should they be able to handle the higher temperature for a week?

There is a condo above mine so that should keep the temperature down to a bearable level. My idea is to have the A/C turned on to a medium temperature like 85 degrees for the last 3 days so the cool down will be more gradual.
What do y'all think

I wouldn't even ask about this if the power rates weren't so incredibly high here.
The Dukeman