Make walls of grow space more reflective to get more light to your plants. A common way to quickly add a lot of reflectivity is to paint walls with flat white latex paint – simply painting your walls with this specific type of paint is really cheap but effective!
Big cannabis buds grown under CFLs from seed – pictures by joe blow
Flowering Stage Tactics to Yield More with CFLs
Learn more about increasing your yields with reflectivity
Have lots of space; if you have at least 5 feet of height in your grow space, I recommend upgrading to a more efficient grow light.
Start Growing with CFLs Today!
B.) Medium Size CFL Bulb Setup <– Recommended
When you’re buying CFLs, they come in different “color spectrums.” Some CFLs appear more orange/yellow, some are almost blue, and others almost look like bright white daylight on a sunny day.
(choose whether you plan to grow in soil, coco coir, hydro, etc)
The sun produces about 100,000 lumens per square foot, so the closer you can get to this number, the more productive your marijuana plants will be. Building a hood for your CFL lights and concentrating them as close as possible during flowering will help mimic natural sunlight as much as possible.
Investing in a timer to turn the CFL lights on and off on an optimal schedule for the plant’s stages of life is a good idea. It’s also a good idea to invest in high-quality growing medium and nutrients to improve yields.
However, this doesn’t make or break your cannabis growing operation. If you don’t use a warm white CFL for flowering, you won’t ruin your marijuana. This advice is more about how to set up CFL grow lights in a perfect world.
Many novice cannabis growers do great with CFL setups during the vegetative stage but fail when the plants go to flower. If you want bigger, denser, more potent buds, you need maximal light intensity.
How Many CFL Lights For One Plant?
They come in a variety of different bases, so flexibility when designing a grow operation won’t be a problem. CFL lights don’t use excessive energy and don’t heat up as high as some other specialized grow lights for marijuana.
As mentioned, the coverage of one CFL bulb will only produce enough light exposure to about 12 inches away from the bulb itself. This means that you’ll probably need multiple lights per plant to account for lateral growth.
If you are trying to do a single CFL grow operation with only one bulb, you need a small plant that flowers quickly, like an autoflower variety. Keep in mind that the yield of cannabis will be low with this setup. But, if you can’t spare more room than this, it’s still doable multiple times a year!
CFL Grow Light Coverage
To get big, productive buds when using fluorescent light bulbs for growing weed, you need the most light intensity that you can produce. This is the most important factor when flowering with CFL lights.