Small temp swings or set heater higher?

[lastlight]

A chiller isn't within my budget right now but I do have my heater on a dual-stage Ranco controller. I am thinking of buying either the 2-fan or 4-fan clip on Azoo fan unit and having it kick on when temp reaches 80. I've heard evaporation can drop the temp a lot and with my osmolator I don't mind really.

You're right though I really am aiming for stability.