See our guide on stealth growing for more information. Also, because of the low heat output, these lights can be hung in between flowering plants. Keep the bulbs as close to the foliage as possible.
Due to the inverse square law, your plants get alot more lumens from the bulb when it is closer to them. Because you can get them so close to the plants, you are delivering a lot more light than you think. When growing cannabis indoors, you should always top your plants at least once.
You need to keep the canopy level, to offer the best spread of light to the plant. Top your plant, and low stress train the side shoots with garden wire. This will ensure a level canopy, and the whole plant will be an equal distance from the light. Having tall plants is no good when growing cannabis with CFLs, as you can only provide light to the tallest part of the plant.
Low Stress Training will allow the plant to be spread out further, giving it more light. This means, the light can not penetrate too deeply into the canopy. So any leaves just a couple of inches below the canopy, will not get enough light. To let more light penetrate through the canopy, selective thinning or pruning must be done.
This will increase yields and keep your plant happy. Once rooted, the clones can be put straight into flower. While the wattage of the light produced by the CFL bulbs is more important than the spectrum of light , optimizing the spectrum is a good idea.
The best CFL for vegetative growth will be somewhere around K. A softer spectrum around K will be a good choice for a CFL flowering bulb. This advice is more about how to set up CFL grow lights in a perfect world. As mentioned, the coverage of one CFL bulb will only produce enough light exposure to about 12 inches away from the bulb itself. Topping your plants and tying them to grow more laterally is the best way to ensure your plant can grow large without being too tall for CFL full spectrum grow bulbs.
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. 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.
The sun produces about , lumens per square foot, so the closer you can get to this number, the more productive your marijuana plants will be. Just remember watt for watt, the electricity will still cost the same, also if the larger wattage CFL bulbs are placed too close, the plant can suffer from light stress.
It is important to use the correct kelvin temperature for each stage. As long as you use a decent extraction fan, you should not have problems with heat. Good luck! I just want to share my appreciation for the clarity offered here. For the added tips and where to for bulbs. Well hey there. Got one girl my friends tell me to flip already. Have over a dozen spots that I imagine will turn into flowers. Very intense relationship has been created.
First time grow. Been doing the shuffle in and out with a minimum of 7 hours of full beach sun and then back she goes and has for another indoor bath 10 hours. More will be revealed. Maybe 2 for first couple of weeks then add 2 more.
Def use all 4 RED for flowering. If they are actual wattages then you should be ok. I would top 1 plant for 4 main colas and then spread the center of the plant wide open. You will need all 12 of those bulbs as I described to flower 1 plant and get any kind of decent yield. If you intend to grow more than 1 plant, you may want to start thinking about adding some high output T5 units in there.
I even switched from Blue K to Red K bulbs when switching to flowering. Must say, whilst the quality of bud was always good, the yield was pathetic Avg g per plant. Notify me of follow-up comments by email. Notify me of new posts by email. Images on this site are free to share unless attributed to a 3rd party , as long as you give credit to Grow Light Info and provide a link back to the page from which the image came.
Some recommended products may use affiliate links. As an Amazon Associate I earn from qualifying purchases. Everybody wants to know how many CFL bulbs are needed per plant. But how can you answer that without a little more info? I mean, how large is the plant? What is the wattage on the bulbs?
That said, I can still help, even without them. Thank u all for these very educative and useful information…. I wrote this entire article to answer this question. Did you read it? How longs do I keep the lights on the plants and how long do I keep them off. Sorry for jumping in. Any comments apprciated as 10 years since last grow.
Thx Oucheeeeee. Leave a Reply Cancel reply Your email address will not be published. Comment Name Email Website Notify me of follow-up comments by email. Follow Us Facebook Pinterest Twitter. Search Search the site Image Reuse Images on this site are free to share unless attributed to a 3rd party , as long as you give credit to Grow Light Info and provide a link back to the page from which the image came.
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