grow light schedule

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    Changing lighting schedule question

    Hi guys. I'm growing a few plants under a 600w hps and all is good, but temps are starting to rise. It sure is hot in my grow room, and to counter this, I've decided to change the light schedule (18/6) to 6pm-9am. Currently, it's on from 4am-10pm. How can I make this change without...
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