Here are some common questions about our grow lights.
>What is the spectrum for Haight Solid State grow lights?
Chlorophyll only absorbs the red and blue wavelengths from sunlight, but there are a number of additional pigments that also absorb white light. These pigments enhance various regulatory and nutritional aspects of the plant, and can also affect taste. Our PPF grow lights use a full spectrum of red and blue LEDs, but we also include some white LEDs.
Haight Solid State PPF Grow light Spectrum
.bmp)
Under 400nm Ultra-violet - not used
400-450nm Violet - not used
450-500nm Blue - strongly absorbed by chlorophyll
500-550nm Green - reflected by plants
550-600nm Yellow/Orange - some pigments absorb light
600-650nm Red - strongly absorbed by chlorophyll and helper molecules
650-700nm Deep Red - strongly absorbed by chlorophyll
Over 700nm Infra-red - not used
>What makes your LED panel different from all those other duds?
We know that many other LED grow lights work poorly. Early attempts with older technology just didn't have the power needed to grow plants. Our competitors use single-watt or 2 - 3W narrow-beam bulbs, packed in tightly - this creates a lot of heat but can't cover as many plants. Many are big clunky panels with several fans running at 10 to 20W each, so a 300W panel only puts out about 180W of light. You don't need fans or AC to use our panels, and you can cover your whole canopy using fewer lights.
>Can I use the PPF-400 to flower plants?
Yes! Both lights have the same spectrum and can be used for vegetative growth or flowering.
>Why is the 660nm wavelength so important for flowering plants?
Lab tests have shown that chlorophyll absorption peaks at deep red 660nm, so many grow lights use a lot of this wavelength. Plants need the whole red spectrum, but too much deep red causes the plants to stretch.
The white LEDs we use are super warm and give off a lot of light in the 650nm to 700nm range, but not too much. Plants see our light spectrum as high quality, so they do not stretch abnormally - even when positioned relatively far from the canopy.
>What are the advantages of broad beam angled LEDs?
We use wide beam angles (140 degrees viewing angle). This is much better than narrow beams that lower power LEDs often need; wide beams spread the light uniformly over the entire growing area, not just on one spot directly below the light. With wide beams, the light can be just a few inches from the plants and still cover more square area. Some light goes out to the sides, which you can take advantage of by hanging reflective material along the wall of your grow room.
>Can I use the PPF-800 in a 2ft by 2ft space?
We recommend using the PPF-400 for that sized space. The smallest space we can recommend for the PPF-800 is 32 by 32 inches because anything smaller results in stunted growth from to much light. The amount of light your plants get is strongly affected by the size of the grow space. If your space is too large, or while your plants are small, then it's great to reduce the size of the space being lighted - perhaps by making some walls out of cardboard covered with silver mylar and moving them close to your plants but don't make it any smaller than 32 by 32 inches for the PPF-800.
>Do I need orange LEDs for flowering?
No. Our white LEDs give a much more complete solution.
>Can I use your grow lights with seedlings?
Yes. Unlike other LED grow lights, our PPF-400, PPF-800, and new PPF-1600 provide all the wavelengths needed to grow seedlings.
>Do I need to use a CCFL light to help the LEDs?
No. The white LEDs on our panels generate light with a phosphor, the same way as a CCFL light.
>How does your light stay cool without fans? Will I need AC to keep my grow room cool?
No. Our design positions the LEDs far enough apart that they stay cool naturally and provide a large lighted surface similar to a HID reflector or a skylight.
Most of our competitors pack their 1W or 2W LEDs in tightly, and then need 10W or 20W fans to keep the whole thing cool - we think that's a waste of power. Plus, if one fans fails, the whole unit will likely also fail. Our simple design ensures you'll be able to use the panel for the whole 30,000-hour lifespan of our higher-quality 6W LEDs.
Our bulbs were designed for automotive applications, and are highly durable. All of the components used in our lights were designed for long life: we don't use electrolytic capacitors in our power circuits since they can wear out.
Additional questions? Suggestions or still need help? We'd love to hear from you! Use the form below to contact us.
