Originally Posted by Leon71 (Post 637990)

Without hijacking the thread..............I was wondering about trapped gases and oxygen exchange. I built a large canopy with a couple of small vents in the top. Will the evaporation inside the canopy still be trapping said gases? And I really don't want to fry a $600 T5HO light either.

Originally Posted by crehman (Post 638008)

Thanks everyone for your inputs.

I think i will go with Kien's suggestion of the wire mesh. Now to build a frame for it :biggrin:

Thread can be all yours Leon :mrgreen:

Originally Posted by kien (Post 638017)

Are we talking tiny small, small small, medium small or big small? :lol:

Originally Posted by Leon71 (Post 638026)

I consider them to be small small :biggrin: as they are only slots in the top in a 6" long pattern.

http://i81.photobucket.com/albums/j2...h_HPIM2197.jpg