help me with my box

let me tell u what situation im in ...
painting my room this weekend where i will also get my 15g bud and 8g hash (last one for a while cuz i have to do drug therapy
i will build a shelf on the wall
1,20meter tall 40cm deep 2meter wide
closed on all 3 sides with screws
inside that i wanna place a small cab with enough output for personal use
got a 250w ballast already what do u think how big should the box be?
what ventilation?

hope ya can give me a good design(maybe a blueprint )

why do 51 ppl check out the thread but none of u gimme a answer lol

I can't speak for the others but, I don't really understand what you are getting at.

i just need help with the design cuz i suck at such things

You have a closet that is about 4 feet high, 15 inches deep and 6'6" in length, Am I right so far? Inside that closet you want to put a grow tent/box that will run a 250W HID lamp that will grow for personal use. Am I still on track here? You don't say if you are planning soil or hydro so I'm going with soil as a guess. Height is going to be an issue, the pot will be about 10-12 inches and another 10-12 inches between the top of the plants and the lights and the another 8-10 inches min for the light itself and the hanging system. That is the bulk of your height right there. That is going to leave you with a SOG grow and let them grow horizontally. Heat, you don't say what your room temps are, sounds like you are in the UK, figure around 77-78 room temps. In that size I suspect that the lamp will push that into a temp that is too hot. Is your lamp air cooled? Can you get air in and out of that closet pretty easy? Let me know if we are on the right track here?

everything right i wanna go with autoflower since they stay small or 12/12 from seed air in/out should be easy but should not be too loud

looks like i just need to try my luck at the size and hope that everything will work out

you really dont need to worry about vent with a 250. nor the "autoflower".

go MHfor veg and into SHPS for flower. 250 in that sapce, use mylar or flat white paint with titanium. nevermond, growtent......takes care of that. if youwanna vent, get a inline canfan and charcol filter. then run it out and away.

go coco. the best!!!!! get coco nutes.

for real, go coco.

good luck, keep us posted.

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