if you LST, you got enough room, but you have to, i LSTed all my plants and they shoots are coming from all sides, im growing one in a pc box so i can experiment and the others in another small space, and i will move them to the attic soon cause they are getting too big ..almost, but search around, theres alot of people who grow in pc boxes, and your 2x2x2x2 is a little bigger then a pc case so your fine man, better then me and theres someone giving me pointers on breedbay, and they are any day from harvest with at least an ounce of mazar, he grew it under his bed
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