cr500_af;537916 wrote: Correct, at least in the summertime. When it turns to winter, I'll slowly drop all of the values in small increments until I'm at 78 minimum etc.
I doubt the corals care about the "seasonal temp change", but allowing cooler in winter and warmer in summer means less electricity... heaters work a little less in winter and chiller works a little less in summer.
It may be a tiny difference, but it only takes a couple of minutes to reprogram so if it saves a little it's worth it.