tropical fish tank temperature

I try to find the right temperature for my freshwater tank. Its 29 liters and has 5 tropical fish.?

I 2 ears 7-inch aluminum foil, 2 tiger barbs full development, and 7 inch pleco. The meeting is about 81 degrees right now with a thermometer glass half face 1 tank. Is this good? To those who cite other things while I had this setup for 3 years and have never had a problem with overcrowding, fighting, or overheating. I'm just worried because I am leaving for 3 weeks and try to understand whether you will be fine for cooling to 85 degrees or less, to save the election. account. Im in Arizona, where it becomes much hotter than that.

Thats ok, nothing of higher than 70 to less than 90 isfine

Boil Water Advisory on for Parts of Dunbar
Some West Virginia American Water customers in Dunbar will need to boil their water for at least one minute before using.