Build a CFL Grow Cabinet for Cannabis Growing

Build a CFL Grow Cabinet for Cannabis Growing

DIY Build a CFL Cannabis Grow Cabinet

Build a CFL Grow Cabinet for Cannabis: A Comprehensive Guide​


Welcome, cannabis cultivators! If you're looking to grow your own cannabis plants indoors, you've come to the right place. In this article, I will guide you through the process of building a compact fluorescent light (CFL) grow cabinet, a cost-effective and efficient solution for indoor cultivation. I'll cover everything from materials and setup to plant care and harvesting, ensuring you have a successful and rewarding growing experience.

Materials and Tools​

To build your CFL grow cabinet, you'll need the following materials and tools:

1. Cabinet (preferably a wardrobe or a tall bookshelf)
2. Mylar or white plastic sheeting
3. Duct tape
4. Compact fluorescent lights (CFLs)
5. Light timer
6. Thermometer and hygrometer
7. Power strip
8. Rope ratchets or zip ties
9. Plant pots and saucers
10. Seedling trays
11. Growing medium (soil, coco coir, or hydroponic medium)
12. Nutrients and pH testing kit
13. Pruning shears or scissors
14. Fans for air circulation
15. Eye protection and gardening gloves


1. Choose a suitable cabinet, ensuring it has enough height, width, and depth for your plants to grow.

2. Clean the cabinet thoroughly to remove any dust or debris.

3. Line the interior of the cabinet with mylar or white plastic sheeting, using duct tape to secure it in place. This will help reflect light and maintain a consistent temperature.

4. Install the CFLs, using rope ratchets or zip ties to hang them at the appropriate height. A general rule is to keep the lights about 6 inches away from the top of the plants.

5. Set up the light timer to provide your plants with an 18/6 light cycle (18 hours of light and 6 hours of darkness) during the vegetative stage and a 12/12 light cycle during the flowering stage.

6. Place thermometer and hygrometer inside the cabinet to monitor temperature and humidity levels. Ideal temperatures range between 68-77°F (20-25°C), while humidity levels should be around 40-60% during the vegetative stage and 40-50% during the flowering stage.

7. Set up fans for air circulation, ensuring the air inside the cabinet is consistently moving to prevent mold and mildew growth.

8. Place seedling trays, pots, saucers, and growing medium inside the cabinet.

Plant Care and Harvesting​

1. Start by germinating your cannabis seeds using the paper towel method or by planting them directly in seedling trays filled with a seedling starter mix.

2. Once your seedlings have emerged and have developed their first set of true leaves, transplant them into individual pots filled with your chosen growing medium.

3. Provide your plants with the necessary nutrients, following the manufacturer's instructions for the nutrient solution and pH levels.

4. Prune your plants regularly to remove any dead or dying leaves and to maintain a manageable shape and size.

5. Monitor your plants closely for any signs of pests or diseases, addressing any issues promptly to ensure a healthy grow.

6. After 2-3 months of growth, your cannabis plants should be ready to harvest. Carefully cut down the plants and hang them upside down in a dark, dry area to cure for 2-4 weeks.


Building a CFL grow cabinet is an excellent way to grow cannabis indoors, providing you with complete control over the growing environment and a cost-effective alternative to purchasing a pre-made grow tent. By following the steps outlined in this article and tending to your plants with care, you'll be well on your way to a successful and rewarding cannabis grow.
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