400 hps and 250 watt cfl in a 3x3

Discussion in 'Lighting' started by 400wattsofdeath, Apr 11, 2015.

  1. I have 4 plants growing in a 3x3 with a 400 hps it's doing just fine. How effective would a 250 cfl bulb ? I don't really wanna waste the electric . I turn it on and barely seen any difference in the tent.
     

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