Quote Originally Posted by Weezard
Khyber is correct.
There's not a lot of help light-wise and the under-leaf is a hard sell, for photon absorbtion.
I'd like to get back to this, I tried to find a thread dedicated to the discussion of under leaf lighting and/or floor reflection applicable to LED's, but the 60 seconds between searches is kinda killin my ADD. Sorry for the threadjack though.

Anyways, even if the plant isn't absorbing much if any light thru the bottom of the leaf, shouldn't reflecting light back up at the ceiling, which I'm assuming is also reflective/mylar in most cases; cause the ambient lighting in the room to increase? I would think that some of the light would then be bounced back off the ceiling which should raise ambient light right? I would also think this would be verifiable via a light meter that's placed over the top of a plant facing up towards the LED's, to simulate increased ambient light at the topside of the plant which would be farthest from reflection placed at floor level - measuring the difference with and without floor/soil reflections?

Also, shouldn't any additional reflection, help "distribute" around the room, the very distinct light wavelengths present in the blue and red led's, like "homogenize" it basically? I would think this benefit would be more applicable to DIY lighting which may have subpar or at least not as efficient beam angles, lenses, and reflectors.

Just thinking outloud sorry if this is frequently discussed just kinda want to see more opinion on this. And I just chose your post Weez randomly to quote.

first post... I've read hundreds of pages on this forum and thank you all so much for sharing your many awesome ideas, huge fan of a lot of individuals on here... not gonna try and name 'em all lest I leave someone out. I'm a geek that loves LED's and i'm excited to be working on some DIY LED lights for a friend... can't wait to give back too. and sorry, I ramble and make long posts more then even normal when i'm hanging out with my Volcano like I was tonight :vap_smiley: