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what lights do u need to grow weed indoors

CFLs (compact fluorescent lamps) are fluorescent lights similar to what you’d find in a school or office building, but smaller. For growing weed, they are usually called “T5s”—the “T” stands for “tubular” and the “5” refers to its diameter, “⅝”.

Some grow lights are more expensive than others, but also more efficient, saving money in the long run. Some lights are bulky with many parts, some light in weight, and some are better suited for young or mature plants.

Ventilation is also a concern. If you’re growing in a tight space with a light that runs hot, you’ll need to have fans in there, which also take up space. If there’s not enough room for a light and a fan, you may need to invest in a light that doesn’t run as hot, such as an LED. For example, grow tents are usually built tall to allow room for equipment up top, not to grow plants all the way to the ceiling.

HPS (High-pressure sodium)

These fluorescent lights are cheap and efficient and great for vegetative growth. They’re especially great for helping along germinating seeds and small seedlings because they don’t put off much heat and won’t scorch the delicate seeds. They won’t run up your electricity bill too much.

Here are a few different CFL grow lights at different price points.

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 much does a grow light cost?

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.

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.

What lights do u need to grow weed indoors

However, with an expected service life of only 10,000 hours, you will need to replace these lights a lot more frequently than LEDs.

The system is user-friendly and designed to be used straight out of the box. Simply plug it into an available wall socket, and it is good to go. The GRW also comes with a lens to help concentrate the light downwards to maximize the light source and better benefit your plants.

2. Sun System LEC 315 Light

This light has stood the test of time for more than eight years, so you can be certain that your money will be well spent.

Grow with the Sun

3. Advanced Platinum Series Grow Light

This 12-band LED light is ideal for a variety of indoor plants, including weed. One of the best things about this light is the money you can save. When you replace other lights for growing weed with the Advanced Platinum Series LED light, you will immediately notice a drop in your energy use.