Hi i have a 4x4 tent with 2 2000 watt leds and a 400watt metal halide on a 18/6 schedule
When i switch to 12/12 for flowering, should i switch the metal halide with the high pressure sodium, or should i just leave the metal halide bulb in??
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Switch to HPS for flowering, better spectrum for flowering, more light per watt. I grew with MH and HPS for over 20 years.
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