2x2x4 setup in my bedroom with some blueberry banana. The light is possibly overkill but it was an extra lamp I had, tried to dial in the tent as best as possible. It gets up to about 82 degrees but it drops off to the high 70's. Had to right the light to the exact top of the tent to guarantee height clearance for the tree with training. Used a 1 gallon pot for this with 4oz of super soil mixed in with mycorrhizal and fox farm ocean soil. The medium is currently 34" away from the light source but the lamp is for Mars Hydro 3x3 and its a tent smaller than its intended use so its generating a lot of heat. I'll put the pot on a box to get it closer if it looks like its struggling but I doubt it.