Awesome site and cool fish. Any thoughts on mixing the sunfish with jack Dempsey adults. The jacks I got don't see. Too aggressive. 125 4 foot tank.
You probably could but sunfish like water cooler than JDs.
At those temps, you'd be fine. My sunfish can tolerate temps up to 84 for short periods in the summer as long as its well oxygenated.
If you are going to catch some sunfish for your tank, I would recommend staying away from Bluegill. IME they are very, very aggressive to all fish, not just other sunfish. The 2.5" Bluegill I have is way more aggressive than my Greens (most of which are larger than it).