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how to build a cheap grow box for weed

This build is a perfect fit for a small room or garage space. At 64” tall, the tent affords enough room to propagate most smaller, bushier cultivars. There is a canopy height limit of between 35” and 42”.

The 4×4’ main tent is powered by a 630w CMH light and the 1×4’ two-tiered tent extension is built out with two 4-bulb t5 fluorescent light fixtures. Complete with four fans, two dual outlet timers, and adjustable intake/exhaust components, this 80” tent supports even the most ambitious of grows.

Who should use this build?

With this system, cool air will enter through the bottom of the tent, and warm air will be scrubbed as it leaves the top of the tent. The 6” clip-on fan should be placed just above canopy level on the back-left pole to help circulate air evenly as the plants mature.

Total cost: $117-147

Build notes:

For growers who want a full system capable of germinating seedlings, taking and keeping clones, maintaining mother plants, and have multiple chambers for various projects, this is the build for you.

How to build a cheap grow box for weed

If you’re planning to build your grow room with plywood for example, you have to cover the inside with a waterproof material like a plastic sheet (or something similar).

Air-tight (temperature, humidity, and airflow)

First, you’ll need to cut and assemble the poles into something like this:

Grow “box”

This post was most recently updated on March 26, 2021.