Unless you have glass blocking them you can use the UVB rays and blue light from the MH, if there aren't heat issues with that. You would have some very nice buds.
canuck grower Reviewed by canuck grower on . Which one should I choose? I found a light system that has a 400watt HPS and 400watt MH together. Now should I buy this system or buy a 600W Hps for my flowering cab? For the money it cost the same as buying the 600 watter.:S5: Rating: 5