90 gallons with sump 79-80 with no chiller, ac or heaters :) In my condo temp is very stable.

77.5 and locked in with LED lighting and Fluval Heater.

Same here minus the Fluval

80-81

76-78 weather pending

mine stays at 78-79, it might hit 82 in the hot summer months. Its quite something how much your temp. will drop by just blowing a small fan across the surface. I can drop my temp down about 3 degrees over a 7-8 hr. period if things get to hot. Heavy evaporation though.

currently running 76F +/- about 0.4F, basement sump, LEDs, no chiller. Considering dropping to 74 to save heating cost but I've never had a tank down to that before, anyone else?

Since I put a controller on the tank it runs at 76.9-77.1. It helps that the tank is in a basement that so far has not got over 72 in the summer. I only moved into the new house at the end of August though.