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Anyone have any experience here? I am thinking of running 4 - 315W CMH's made by Sunplix with Philips 4200K bulbs (14" open hoods) over a 4X8 table. Table will be trellised with 28 plants. I have a friend using 3 of this same light over a 4X8 table but she is only running 4 plants in that...

I am 2 weeks away from harvest and I need to start doing straight H2O. Since R/O strips everything from the water, should I add a small amount of Cal-Mag to the flush? Or just ph'd R/O? Here's part of my progress.

I bought 2 Pro Max Max1200 lights. They pull 250w from the wall but are supposed to be equivalent to a 1000w HID (at 4' X 4' coverage). I am running these 2 lights and a 1000w HPS. I just flipped to flower 3 days ago. The plants under the LEDs are very healthy and look really good but...