What size LED light for 4x8 grow tent? (2024)

FAQs

What size LED light for 4x8 grow tent? ›

During the FLOWERING STAGE

Ideally, you can choose to set up 700-1000 watts of LED lighting. For HPS, you can go as far as getting 2600 watts. However, I suggest that you only stick to the maximum of 1000 watts to avoid your plants from getting overexposed to lights.

For example: As a general rule of thumb, plants that have flowers typically need around 20-30 watts of light per square foot. If the size of your plant's canopy was 4' x 4', this would mean you'd need around 320-480 watts.

The size of your grow space will dictate the size and number of an LED units you purchase. A good rule-of-thumb for LED grow lights is 40 watts of actual wattage per square foot of growing space for flowering medical or "high light" plants like tomatoes or peppers.

However, as a general rule of thumb, when using LED grow lights, you should aim for around 30-50 watts per square foot of grow space, while for traditional grow lights, you should aim for 50-80 watts per square foot of grow space.

Intense, direct light is great for some plants, but it will damage (or even kill others). The plant isn't able to convert all of the light into consumable energy, and the excess creates a heat issue over time. The plant might use available water to cool itself, which creates a moisture shortage as well.

To produce a favorable yield in flowering period, you need a LED light with an output of at least 50W per square foot of growing space. Now your 4×8 grow tent is 4ft long and 8ft wide. Which gives you a square foot grow space of (4ft x 8ft) = 32. And then, multiply this figure by 50W: (32 x 50)W = 1600 W.

Either way, you can't really measure LED grow lights without one. It's more commonplace in commercial grows to use a light meter. However, using a light meter is a good idea. Even if your plants are growing well, when you use a light meter, you can ensure your lights are perfectly positioned.

Within the 2 to 3sqft space of usable light in that footprint, you'll be able to fit up to 2-4 untrained plants or 1 to 3 trained plants.

What size light do I need for my tent? ›

Standard advice says you should aim for 32-50 watts per square foot of grow space.

The best photosynthesis wavelengths on the visible light spectrum occur in the blue range (425 to 450 nanometers) and the red range (600 to 700 nanometers). Regular LED lights, on the other hand, lack many of the wavelengths needed for plant growth; the light they produce is only good for illumination.

How much wattage of led bulb is enough for a normal size room? 12w to 15w led bulb is enough for a normal size room. Generally 1500–2000lumen light source is required for standard 12 by 12 feet room.

Plants can experience light burn or stress when they receive too much light or when the light source is too close to the canopy. Symptoms of light burn include leaf curling, bleaching, or brown spots on leaves. To prevent this, maintain a safe distance between the LED grow lights and the plant canopy.

Compared to HPS or HID lights, LED grow lights require less energy consumption and emit the same or more intense light. As a result, it's recommended that growers use at least 600 watts of LED light for a 5x5 grow tent, but this can vary depending on the type of plants being grown.

Technically, yes. A basic 150-watt LED white light bulb is sufficient for nurturing a small cannabis plant.

The Growealth G3000 is a 300W LED grow light suitable for a 3ft x 3ft or 90cm x 90cm grow area with a wideband spectrum with added IR and UV. The Growealth G3000 is an excellent value for money grow light.

What Size Light Do I Need for a 2x4 Grow Tent. The traditional recommendation for LED grow lights was around 32 watts per square foot for flowering plants. So, for a 2x4 tent, you'd want a light of at least 256 watts.

Compared to HPS or HID lights, LED grow lights require less energy consumption and emit the same or more intense light. As a result, it's recommended that growers use at least 600 watts of LED light for a 5x5 grow tent, but this can vary depending on the type of plants being grown.