that looks like a pretty small space to have 2 chambers man.

if you end up hanging a hps fitting under that you wont have much head room left..

i use l.s.t but the colas still reach up....

if i was you id forget the workbench and line the back wall with mylar and build two sides and line them...

put a carbon filter on to a inline exhaust fan and put a vent on the outside of your outhouse... it wont look suspicious.. i know in europe all building regulations require outhouses to have a proper vent..


i friend of mine has his vent coming out at the back of a hanging basket for extra stealth

that way you wont be restricted in what seeds(indica/sative) u grow..

hope you get sorted..:rastasmoke:

here is a grow box i built when i started off. it worked well for a small set up, 2 chambers and a section for the timers and ballasts.. but it got too hot when i added a 400w hps...small boxes get very hot with the wrong lighting so choose wisley:thumbsup: