Yo AS/all....
gnomer...my (crude) tunnel is 8 ft. x 8 ft. and was constructed of 2- 4 x 8 sheets of 1/8 thick masonite board, Elmers glue, and mylar. I am running 2-1000's on the ends and a 600 in the middle (didn't have another 1000 at the time so I used the 600) in cool tubes with the internal reflector ripped out...resulting in 360 degrees of light bouncing all over the place.
The intensity of the light in the middle of the space is a bit higher..but not overly so. Time and time again I watch as the buds on the farthest edges of the room...4 ft from the light....bulk and grow at a rate that rivals their counterparts directly under the lights. (I put the larger plants on the sides and the sidelight is incredible)
This, I believe, is the beauty of and the reason for utilizing a tunnel such as this. Bottom line...the spred of light is unbelievable under these canopies.
good luck kids.
sky
Wow, this is more like that old Sci-Fi show on tv "The Time Tunnel" than the old Keef Treez grow tunnel..... my first day back....first look at the threads... and I see this... Holy timewarp, Islanders!
I will apologize for the pic upfront. However....crazy as it seems...decrepit as it is...I still have this room in the Hidden Y2K bunker...7 years later! Yeah, baby! The thrilling daze of yesteryear! Er...a sorta.....that crawlspace hauling of dirt and materials was a real beee-atch. Probably why this room is still there! OK....that and I'm lazy and hey...you never know...pot may become illegal again and BAM...back under the rock! But I digress...
This 10 x 10' room went through a few changes since the "tunnel was in full swing. Namely...the panda plastic that I hung to make the room smaller later on... and the addition of reflectors...which are still there....so are the ballasts! (What a stoner) I forgot they were there...LOL. That's what happens when you close a hydro store and end up with 20 ballasts and change yer game up...heeheee... It's a good find now though!
Even so...along with the separation of the panels that now show how I had to cut into strips 2' wide x 8' long to get them in the crawlspace....and then foil tape the seams... you can see the mylar glued to the Masonite....and the curving of the tunnel. When it was in full op...the hooks now holding the reflectors held 6" Cool tubes with the inner "reflector" yanked out so the light radiated in all directions. On the final runs with the tunnel...I had a 1K HPS on each end and a 600 in the center. With the curvature....the plants at the sides would often grow fatter buds than the ones directly under the lights.
I abandoned this room when I finally told my sons I was a card carrying legal patient and came topside. I used it again later to do a seed/sex run. It has been idle ever since...probably 5 years. Thanks for the time trip!
And BTW....if I remember through the fog correctly...the first incarnations of these tunnels were 600's...and were a free standing wood garden with a tunnel overhead.... 4 x 4's as posts....etc. Didn't remember that til I saw the materials list....
Another aside....re "Keef Treez".... I have a friend who knew him and who said he moved on/did bigger and better...non-pot-related business ventures and investments in CA and at last report...was a happy camper with a varied/good life. (hopefully...growing for fun again)
sky