I've heard that somewhere before too...

Take the MH out, and get a separte ballast... your plants looked rather stretched... this might be why... cos their cancelling each other out.
LIP Reviewed by LIP on . Flowering 400W MH and 400wHPS LOG Tell me what you think of this flowering start and how much better or not it is to flower with both. Any input on this is helpful i thought i heard a couple times that both are better than just an HPS so tell me your input on this. Rating: 5