Nightly low of 77-78...daytime high of 82. SPS dominated, with some LPS and softies. Generally, my softies aren't that happy but they don't die.

26-27°C. Softies for now.

SPS, LPS, 27-29

Softies for me..mainly zoa's, mushrooms etc.

76F here and I have mixed reef with zoanthids, xenia, alveopora, gorgonian, kenya tree, mushrooms, ricordea etc..quite a few sponges, LPS are duncan, dendro, frogspawn, hammer and sps are usual, birdnest, acropora, montipora sp., pocilio, turbinaria and a few that I don't know the name.

mixed reef winter 80-81 summer 81-84

zoos and sps

mine is 20Gal and mixed.

reef temp
 

constant 80 F or 25.5 C at all times. ( chiller is great ) How's the xenia I gave you? Burger

My Apex controller has a seasonal table for temperatures... In summer the temperature is controlled to 27.6 C and winter it's controlled to 24.6 C. Saves heating and cooling energy. I don't use a cooler, but fans and they work pretty well. If it gets to hot in the summer the controller shuts off the metal halide lights. Any given day the temperature swings by 0.3 C.

Funny, being a SCUBA diver, I find that there's all sorts of thermoclines and currents in the water that lead to big and sudden temperature changes. I don't think regulation of temperature is a big factor, but keeping it within limits is.