Already on the sunglasses part. Ihave tested the HPS its super bright. I am doing the LST method and have plantey of head space.

Thanx, but what about changing the spectrum on the same light schedule? What would this pose to the plants?
killfrenzi Reviewed by killfrenzi on . Spectrum Change Questions I have a 1000w switchable ballast that I am currently running 18/6 under 400w Mh.... And I was wondering if there are any benefits from changing spectrum between a 400w Mh and a 1000w Hps during Veg and/or Flower. Any advice? Rating: 5