Stephenj37826
Well-Known Member
I would agree spectrum is important, but not as important as total output, just a FYI ppl add MH to add more UV, COBs have zero UV. Also I would like to say if you are growing in two separate areas with two different growers the outcome will be different.
Well this is partially true. As I told the OP with once again no credit I recommended an agromax pure UV t5 in his area as well...... I was honestly giving the guy several choices and as much info as I could. It's pretty much well known cmh can give better quality as well as they are uv shielded. More blue can also increase quality. Most mh bulbs don't have much true UVB either as they are made not to because it's harmful to our eyes.