I have a portable AC unit hooked up on the flower side. I am thinking of running it much less this summer to see how the plants handle the conditions down there. I keep the dehumidifier running on the flower side year round. My highest electric bill was $455 last August. Add another $37 for the well pump meter.Yeah, too much heat and humidity isnt great for the plants, Buzz, but u do what u can. Dont u have the portable AC down there? Keeps temps in the low 80s? Do u also have a dehumidifier down there too? I bet all that running plus the lights makes for a tidy electric bill during the summers.