The best LED grow lights for cannabis

Factors to consider before buying the best led grow lights for cannabis:

1.How much does the best led grow lights for cannabis cost?

The first thing to consider before buying a LED grow light is how much money you want to spend. With more states coming online with adult-use legalization, home growing is becoming more popular and growing technology is getting better and more efficient all the time.

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.

Consider how often you’ll be growing weed and how long it will take to pay off the initial investment—if you grow once a year, it’ll take a lot longer to pay off an expensive light than if you grow multiple harvests a year.

Aside from the price of the actual light, also take into account utilities—all lights will add to your electricity bill every month, but some more than others. High-intensity discharge lights—known as “HIDs”—may be cheaper to buy but can gobble up electricity, whereas LEDs are more efficient and kinder on your electricity bill but usually more expensive to buy.

Another consideration with the 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.

2. How many grow lights do I need to grow cannabis?


How many grow lights do I need to grow cannabis

The typical home grower will only need one or two lights. Most states limit grow amounts to 6 or 12 plants, and one or two lights should be plenty for that. If you plan on running two separate rooms, one for vegetative plants and one for flowering plants, you’ll need two lights.

How big a light you need will depend on the number of plants you plan on growing, but also on the size of your space. If you’re growing in a closet or a small grow tent, you’ll only be able to fit one small light in there. If you have a wide-open basement, you could invest in a bigger light as opposed to two smaller ones.

Power equals poundage, so if you want big yields you’ll need more wattage. Professional LEDs can start at as little as 200 watts, and go up from there. A high-watt light can double the work of several low-watt bulbs.

3. Types of the best led grow lights for cannabis

There are many types of lights, but below are the four most common you’ll find in a grow room. There are many variations within each of these four types as well, and new lights and technology come out all the time.

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. HID lights, MH (Metal halide), HPS (High-pressure sodium) and LED lights.

4. How to Adapt Your Cultivation for LED Grow Lights?

With traditional HPS and CMH grow lights dominating the market for the last couple of decades, many growers are having to learn how to adapt their grow operations to suit LED grow lights. Countless variables must be taken into account when optimizing a grow room and changing the type of grow lights being used impacts many of them. When retrofitting a grow room that used HPS or CMH grow lights, you may need to do more then just swap your grow light fixtures with new LED lights.

As previously mentioned, LEDs produce far less heat then their HID counterparts. This means you may need to tweak your HVAC or heating systems to account for having less heat produced in your grow room. In warmer climates, this means not having to pump as much heat out of your cultivation room with HVAC systems. In cold climates, you may need to bring in more heat using gas or electric heaters in order to keep your room at an optimal temperature. It’s worth noting that even in colder climates it is still better to use more efficient LED grow lights with supplemental heaters than it is to rely on inefficient HPS/CMH grow lights to simultaneously provide both light and heat. HPS/CMH grow lights produce heat less efficiently then a dedicated heater and must be turned on in order to do so. This means that during off cycles, you may still need to rely on dedicated heaters to keep your room warm. Additionally, during warmer seasons the excess heat produced by HID fixtures may become negative and require HVAC to remove the now unwanted heat.

Additionally, the humidity will be affected when switching to LED grow lights. When the heat from light hits a plant, the water inside of and around the plant is evaporated into the air. This raises the humidity in your grow room. When switching to LED grow lighting, cultivators may not need to use as many dehumidifiers as they had in previous HID grow rooms.

The way your grow light is mounted may also need modification when switching from HPS/CMH to LED. Because The best LED grow lights for cannabis can be placed closer to the canopy, many growers will rig their lights so they can be raised and lowered. Because the grow lights can be moved as the plants grow, they can stay as close as possible to the top of the canopy. Keeping the lights close to the canopy increases the amount of light the plants absorb and use for photosynthesis

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