LEDs (light emitting diodes) are relatively new to the cannabis growing world, compared to HPSs, MHs, and CFLs, but they are quickly proving to be the way of the future. LEDs may be more expensive to buy initially, but they are far more efficient and kinder to the environment and your electricity bill. Some cities even give tax breaks to commercial growers who install or switch to LEDs because they’re better for the environment.
You can find lights for under $100, but they may be low quality and not produce the right spectrum of light, and you can also easily spend as much as $2,000 for a large, state-of-the-art LED.
Lights have fixtures and bulbs, and some require a ballast. Depending on the type and model, the bulbs or the fixtures can be more expensive. There are a lot of abbreviations, but don’t be alarmed.
For HIDs, light occurs as an arc between two nodes inside the bulb. The gas contained in these bulbs is what makes MHs and HPSs different. HID bulbs are usually more expensive than the reflective hoods that hold them.
CFL lights for growing weed
These HID bulbs usually contain sodium, mercury, and xenon, and produce a yellow/orange light, and are commonly used for flowering plants. Some growers will start plants under MH bulbs and switch them to HPSs when plants go into the flowering stage, using the same hood. These lights also require a ballast.
Another consideration with cost is that some lights run hotter than others—HIDs, for example—so they may require additional fans or an AC unit to cool down a grow space. Extra equipment means more electricity, also driving up your utility bill.
Young and mature plants, or vegetative and flowering plants, respectively, like different types of light, and you can buy grow lights that target each spectrum. Commonly, growers using HIDs will use MH bulbs for vegetative plants and HPS bulbs for flowering. Some LEDs are also designed to target different light spectra.
How many grow lights do I need to grow weed?
Fixtures come in all shapes and sizes and can usually accommodate 4-12 long fluorescent bulbs; a standard size is 8 bulbs. Fixtures usually have a reflective material to bounce light in one direction, down on your plants.
There are daylight bulbs and warm white bulbs; the former better for vegetative growth, and the latter for flowering.
First time grower here. I didnt germinate I just put them in soil. Do I need to put light on them or just grow till till I can see them a little and then put light??
With best wishes,
You should make a YouTube video demo
Ciao Susie il consiglio che ti do io x esperienza trentennale, pianta direttamente nel terreno, è più difficile ma dà risultati del 30% in più specie nella quantità. Allora metti il seme in acqua almeno 15 ore,dopo pianta il seme (anche a 23 centimetri sotto terra) innaffia bene e dopo ogni giorno inumidisci fino a quando non spunta la piantina, una volta germogliata io personalmente non la innaffio x almeno una settimana (dipende dalla temperatura esterna) ha lei i nutrienti x sopravivere almeno 10 giorni. E poi vedi se cresce più forte. Io faccio dei mostri di 6 metri
Good afternoon Jon,
Thanks for getting in touch with us!
Of course it would help, however, there is nothing better than the suns rays!
Fortunately, These articles on Lighting Systems: LED vs HPS light and When can seedlings be put under lights or in the sun? may be of interest to you.
With compact fluorescent lamps (usually 100w or more), a distance of around 15cm should be maintained between the top of the young seedlings and the bulb.
Are your cannabis seedlings falling over?
Good luck with your project, and I hope you continue to enjoy the blog.
Have a good day,
Unfortunately, legal restrictions mean we can’t answer grow-related questions or give grow advice on this blog. However, other readers of this blog will often answer questions like yours.