Small Cannabis Grow Tent Kit: Buy and Setup Guide

A small cannabis grow tent kit is a bundled setup for one to four plants. Most kits include a tent, a light, an inline fan, a carbon filter, ducting, a timer, and pots. Kits do not include seeds, water, a hygrometer, or a plan for heat and odor.

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What comes in a small kit

• Tent: 2x2, 2x4, or 3x3 ft.
• Light: LED board or bar, 100 to 300 W.
• Fan: 4 in inline fan, often with a speed controller.
• Filter: carbon filter rated for odor control.
• Ducting: 4 in flex duct and clamps.
• Timer: 24 hour mechanical or digital timer.
• Pots: fabric pots or plastic pots.

Match the tent to the space

Measure floor space and ceiling height. A 2x2 ft tent fits a closet. It needs 48 to 60 in of height plus room for the fan and filter. Leave 12 in above the light for hanging and heat. A 2x4 ft tent needs a room with a door that closes.

What is the Best Starter Cannabis Grow Kit?

Check light wattage

Use the light's wall draw, not the equivalent watts. A 2x2 ft tent needs about 100 to 150 W of LED. A 2x4 ft or 3x3 ft tent needs about 200 to 300 W. A 100 W light in a 3x3 ft tent gives low light at the edges. As a check, extension guides list 20 to 40 W per square foot for flowering indoor plants.

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Cannabis is a short-day plant. Set the timer to 18 hours light and 6 hours dark for vegetative growth. Switch to 12 hours light and 12 hours dark to flower.

Size the fan and filter

Tent volume = length x width x height. A 2x2x5 ft tent is 20 cu ft. A 4 in inline fan moves about 100 to 200 CFM. A carbon filter rated at or above the fan CFM controls odor. Duct and filter add resistance, so a fan rated above the tent volume is normal. Add a speed controller to lower noise and airflow.

Plan for heat, humidity, and electricity

LEDs put less heat into the tent than HID lights, but the driver and fan add heat. Keep the tent away from direct sun. Use a hygrometer. A 120 V, 15 A circuit in a US home supplies up to 1800 W. Keep the grow load under 80% of that limit, or 1440 W. Do not daisy-chain power strips.

Setup order

1. Build the tent on a level floor.
2. Hang the filter and fan at the top.
3. Run duct from filter to fan to outside the tent.
4. Hang the light and set the timer.
5. Add pots, soil, and a drain tray.
6. Run the fan and light for 24 hours before adding plants.

Test for heat, noise, and light leaks. A light leak during the dark period can disrupt flowering. Check the timer with a phone camera. Some LEDs flicker at a rate the eye does not see.

What kits leave out

Most kits do not include a hygrometer, a pH meter, a drain tray, or a way to vent air out of the room. You need a window or a duct path. A carbon filter handles odor inside the tent, not a room with no exhaust. Check local rules for plant count and home grow.

Common buying mistakes

• Buying a kit with a light rated by equivalent watts.
• Using a 2x2 ft tent with a 6 in fan and no speed control.
• Putting the tent in a room with no exhaust path.
• Skipping a timer check.