I grow catts, phals,phrags, and a lot of misc. orchids in the gh. I keep the low temp set at 58 which means it goes from 58 to 62. I don't control the daytime temps but let the sun heat it up if it is out. I do watch for the temps to get above 85 though and at that point start looking at a little ventilation. That usually doesn't happen until March at which point I put on the shade cloth. I was maintaining the night temps between 54 and 58 and began to have bug problems so raised the temp. My plants seem to be doing well. I have lots of spikes and new growth beginning. Betty
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