Best Grow Tent Size for 4 Plants
The first pick is a 4x4 ft grow tent. It gives 16 sq ft of floor space. Four plants in 5-gallon pots fit with room for air flow. A 4x4 tent holds a 600W LED bar light and a 6-inch inline fan. Height is 80 in for most models.
Why 4x4 ft works for 4 plants
Four 5-gallon pots take about 4 sq ft each when plants spread. That is 16 sq ft. A 4x4 tent matches that footprint. The square shape spreads light across the canopy. A 4x4 tent also leaves 12 to 18 in between pots for pruning and watering.
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Light load: plan for 30 to 40 watts of LED per sq ft. A 4x4 tent needs 480 to 640 watts at the wall. Use a 6-inch exhaust fan with a carbon filter. A 4-inch fan runs at full speed in a 4x4 tent and moves less air.
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Option 1: 2x4 ft tent
Floor space is 8 sq ft. Four plants fit in 3-gallon pots. Plants stay small, or you flip to flower at 12 in. Light needs are 240 to 320 watts. This size suits a closet or a short room. Yield is lower than a 4x4 tent.
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Option 2: 3x3 ft tent
Floor space is 9 sq ft. Four plants fit in 3-gallon pots, but the canopy is tight. A 3x3 tent works for a mother plant plus three clones. Light needs are 270 to 360 watts. Check the door opening: some 3x3 tents have a 24 in door, which makes pot access hard.
Option 3: 5x5 ft tent
Floor space is 25 sq ft. This size fits 4 plants in 10-gallon pots or 6 plants in 5-gallon pots. Light needs are 750 to 1,000 watts. A 5x5 tent needs an 8-inch fan and a larger filter. It also needs a room with 6 ft of clearance on each side for the frame.
Check these numbers before you buy
- Pot size: 5-gallon pots need 16 sq ft for 4 plants.
- Light: 30 to 40 watts per sq ft of LED.
- Height: 80 in lets you run a 600W light at 18 to 24 in above the canopy.
- Vent: 6-inch duct for a 4x4, 8-inch duct for a 5x5.
- Door: 28 in or wider for a 4x4 tent.
A 4x4 ft tent is the safe pick for 4 cannabis plants. Buy a 2x4 if floor space is fixed. Buy a 5x5 if you want larger pots or a second light.