Temperature controller for canopy fans

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Got a datalogger (PLC) was going to get all fancy with the program, probes and relays but thought until I do, just have the fans come on at the same time as the lights.

Plugged the lights and fan into the same power bar and that into a single timer, adjusting the heater, temperature now steady at 78°.

Now can evaporate over a gal/day with the fans blowing on the water, but at least the temps okay.