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50W (pack of 2pcs 25W) Emerson Effect LED Grow Tube Light

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Original price $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $29.00
$29.00 - $29.00
Current price $29.00

The Emerson effect refers to the increased efficiency of photosynthesis when plants are exposed to light with two different wavelengths (usually red and far-red).

Specifically, photosystem I absorbs far-red light and photosystem II absorbs red light. When both wavelengths of light are present simultaneously, there is an increase in energy transfer between the two photosystems, which leads to more efficient photosynthesis.

The combination of red and far-red light is often referred to as the "Emerson enhancement effect".

The Emerson effect involves using two different wavelengths of light at the same time to enhance the rate of photosynthesis in plants. The wavelengths used in the Emerson effect are typically in the red and far-red parts of the spectrum. The red light used has a wavelength range of 600-700 nanometers (nm), while the far-red has a wavelength range of 700-800 nm.

The red light is absorbed by chlorophyll a, while far-red light is absorbed by accessory pigments, such as phytochrome. When both wavelengths are present, the energy absorbed by these different pigments can be effectively transferred to the photosynthetic reaction center, resulting in increased photosynthesis.

The enhanced photosynthesis resulting from the Emerson effect can have important implications for plant growth and productivity, particularly in low-light environments. By optimizing the balance of red and far-red light, plant growers can manipulate the Emerson effect to improve crop yields and quality.

How ParfactWorks Emerson Effect Led Light Works

How ParfactWorks Emerson Effect Led Light Works

Technical Parameters

Size 43.30” x 1.02“
Wattage 50W (2pcs 25W LED tube per pack)
Voltage 85-265Vac
Power factor 0.95
Wavelengths Red 660nm 144pcs, IR 730nm 48pcs
Daisy Chainable Yes (Max. 16 sets = 32 tubes suggested)
Dimmable No
Lifespan 50,000 hours


Size: 43.30” x 1.02“
Wattage: 50W (25W x 2 tubes)
Voltage: 85-265Vac
Power factor: 0.95
Wavelengths: Red 660nm, IR 730nm
Lifespan: 50,000 hours
Daisy chainable: Yes
Dimmable: No
Q: Is it always discreet shipping/package?
A: Yes of course. We do discreet shipping for all orders. All our packages are shipped with plastic foam protection to keep it safe, and without any labels “grow lights” or brand name mentioned on the packages.

Q: What should I do if I cannot check out successfully?
A: Contact us at or online chat, we’re always ready to help.

Q: Do you ship to P.O. boxes?
A: Unfortunately, there are a lot of scammers out there, making it impossible for us to ship to P.O. boxes. Please provide a business or residential address when placing your order.

Q: Can I cancel my order?
A: If you would like to cancel an order, please contact us as soon as possible at
If your order has not yet begun processing, we can issue a full refund.
If it has been processed, you can get a refund minus shipping charges (both ways, even if the product had free shipping—we still have to pay for it, after all). A restocking fee of up to 25% may also apply.

Q: How long will it take for my order to arrive?
A: Most orders will be at your door within 7 business days of placing your order, but this can take longer in some instances.
We will keep you updated as processing and shipping progresses, but feel free to email us at if you have any questions about the status of your order.
We generally process your order within 24 hours of receiving it and it usually ships out within a day or two after that.
We ship most products using standard ground shipping via UPS, FedEx or the USPS. Depending on your location.

Q: How do I track my package?
A: An email that contains the tracking link URL will be sent to you once your order is shipped.

Q: What is your warranty? What should I do if my light has a problem?
A: We have a 5-year warranty(2 years free,3 years limited), Check our warranty details here
If you have a product issue, please contact us first at

Q: What can I do if I have a business plan?
A: If you would like to cooperate with ParFactWorks, please email us at

Q: What can I do if the Package Shows Delivered But I Don’t Have It?
A: Please follow the instructions below if the carrier shows package delivered but you don’t have it:
• Do check carefully the area around the shipping address and check with your neighbors or anyone who may have the package for you.
• If there is no clue found please call the carrier directly to report a missing package for the fastest logistics information, meanwhile, please email us about the issue as well ( ParfactWorks can not be held responsible for packages stolen from the delivery address so please be sure to ship to a secure location! If the items are lost, we need at least 30-45 days to investigate. So please keep following the logistics dynamics after we provide the tracking number, and do not miss out on our mail about the delivery notification.

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