Any extra light is a good thing, i am not too sure about lights under the scrog it might confuse and stunt there growth. but who knows it might work, give it a red hot crack and good luck with.
aggerts Reviewed by aggerts on . Adding CFLs Below Canopy to Supplement 400HPS Scrog? Oops, I meant tube fluorescents, not CFLs. I use the Scrog method (36" x 48" screen) under 400w HPS due to low overhead clearance of the space. I've had good success so far but have been toying with the idea of upping the lighting. It was suggested to me rather than purchase a new lamp/fixture with more balls to simply add more light to what I already have. This got me thinking of the four 4' T12 Ott-Lites I've had in storage for years, and I'd like to add them to the system. Their Rating: 5