thanks tasty aces......the penetration of UVB should be pretty good considering the wavelength...but that is a good question...something more to look into for sure....in my case....I will never have more than 5-6 plants...so its not as much of an issue

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Ride hard, Ride long....git put away Wet each and every time....no holdin' Back.....enjoy the journey ...... cuz that's ALL there is! Walk on and walk tall folks!