LEDs also typically run a lot cooler than HIDs, so you may not need extra equipment to cool down your grow space, and one LED can usually be used for both vegetative and flowering growth. Some high-end LEDs allow you to change the spectrum for each growth stage.
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.
You can find HID reflector hoods, as well as MH and HPS bulbs at any local grow shop.
Best CFL grow light brands
Grow lights allow you to control exactly how much light your plants receive, ensuring they get the same amount of light day after day, without the grower having to solve problems with bad weather or cloudy days that happen in an outdoor environment.
The downside to CFLs is they aren’t great for flowering plants, and growers will usually use another type of light to finish plants. CFLs just don’t generate enough intense light for plants to pack on weight.
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.
MH (Metal halide)
Both types of HIDs are usually inexpensive to buy but will eat up electricity. HIDs throw off a lot of light and heat, which the plants need to bulk up and get potent. But, they run hot, contain heavy metals, and ballasts can fail.
There are daylight bulbs and warm white bulbs; the former better for vegetative growth, and the latter for flowering.
That is why it is a good idea to assess the lumen measurement when considering lights for growing weed. Cannabis plants need lights that provide enough lumens intensity for their proper growth.
As an LED, the 440Watt California Lightworks Solarstorm will work for your plants’ entire lifecycle. The light provides five bands of high PAR (Photosynthetic Active Radiation) from the deepest blue colors to the deepest red colors of light – a rich blend of everything your marijuana plants need.
8. iPower 600-Watt Light
Like plants growing outdoors in the sunlight, indoor plants grow best under full-spectrum bulbs
● They’re typically the choice of professionals.
Then again, if you have a grow space of less than five square feet, fluorescent light is enough when your plants are small. You can upgrade to a 250W HPS as the plants get larger. If you have space, an MH light for plants in the vegetative stage and HPS for the blooming phase works well. Using MH lighting throughout is fine but will have fewer flowers, more foliage, and a lower yield.
Growth Cycle Stage
This ensures you don’t overheat your grow room. Marijuana plants like a warm environment. However, excessive heat damages them and may also cause a fire in your grow room.
If you’re looking for discretion, LED grow lights and fluorescent grow lights are the likeliest options. However, if you’re after efficiency, HID is probably the best grow light for marijuana available. That is, as long as you don’t mind the increase in your electricity bill.
Are House Lights Good for Plants?
There are plants like microgreens that can flourish with a basic lamp. However, marijuana plants require fairly strong and consistent light to help them into the blooming phase. Remember, when you grow cannabis indoors, you’re competing with the sun in terms of light! This means you need high-power lights in your plants’ grow space.