Not sure on the penetration, but one of the main advantages of fluorescents is you can get them right on the plant if they have a clear guard around them, and real close otherwise. Be sure you can easily adjust either the plant height or light height, so you can keep the light right on them as they grow taller.

Lookign forward to your odor solution.
Opie Yutts Reviewed by Opie Yutts on . Cabinet Concerns Talked it over with the other half, since we have the addition of a little one to our happy family it's no longer worth having a large grow. While I wasn't supplying the whole town, I did sell to friends and a few family members. Now we just want enough for ourselves and enough left over to make hash with. Concept here is this. To build a stealth grow and conceal inside a media center cabinet. This will entail building two 4' tall 2' wide, 2' deep as "speaker stands for my baby advent Rating: 5