4ft t5 led grow light bulbs 10Pcs 1/2/3/4 feet LED Tube T5 Grow Light Red/Blue Spectrum (R:B=5:1) Clear Lens for Indoor Plant Veg and Flower Hydroponic Greenhouse Growing Bar

4ft t5 led grow light bulbs 10Pcs 1/2/3/4 feet LED Tube T5 Grow Light Red/Blue Spectrum (R:B=5:1) Clear Lens for Indoor Plant Veg and Flower Hydroponic Greenhouse Growing BarProduct Notice *Blue(wavelength: 460nm) & Red(wavelength: 660nm) *Red Blue Spectrum(R: B=5: 1) *Made with Aluminum and PC, no glass. *Transparent lens with better light transmittance *Dual End power feed *Ballast by pass *Base Type: G13 Bi pin *Non dimmable indoor use Tube Dimension Length Wattage Dimension 1feet 2feet 6W 10W L296mm,W23mm, H35mm L590mm,W23mm,H35mm 3feet 15W L875mm, W23mm,H35mm 4feet 18W L1178mm,W23mm,H35mm Different RED: BLUE Ratio

Product Notice

*Blue(wavelength: 460nm) & Red(wavelength: 660nm) 
*Red/Blue Spectrum(R:B=5:1)
*Made with Aluminum and PC, no glass.
*Transparent lens with better light transmittance
*Dual-End power feed
*Ballast by-pass
*Base Type: G13 Bi-pin
*Non-dimmable indoor use

Tube Dimension

Different RED: BLUE Ratio


The PHOTOSYNTHESIS absorb the light with wavelength ranged in 380nm-760nm, among which the 610-720 nm and 400-510 nm are the absorption peak area.

 The 660nm deep red and 460nm blue LED light combination will give plant suitable growth light. The combination will visually produce pink light.

 The Blue wavelengths encourage vegetative growth and are essential in lighting for seedlings and young plants during the vegetative stage of their growth cycle, especially when “stretching” must be reduced or eliminated. It also stimulates the production of secondary pigments which can enhance colors and is known to also stimulate Terpene (i.e. fragrance) production.

The Red light affects phytochrome reversibility and is the most important for flowering and fruiting regulation. These wavelengths encourage stem growth, flowering and fruit production, and chlorophyll production. The 660nm wavelength has a very strong photosynthetic action and also exhibits the highest action on red-absorbing phytochrome regulated germination, flowering, and other processes. Most effective for light cycle extension or night interruption to induce flowering of long-day plants or to prevent flowering of short-day plants.

For different plants can adjust the RED: BLUE rate to get the most proper light for the plants.

The light RED: BLUE rated at 3:1, 4:1, 5:1 are good to accelerate the growth of leaf, for plant-like Cabbage, Lettuce, Spinach and so on.

The light RED: BLUE rated at 5:1, 6:1 is good for the plant that needs light fill in the whole growth period, like the Leaf Succulent.

The light RED: BLUE rated at 7:1, 8:1, 9:1 are good to accelerate the growth of root, for plant-like Eggplant, Tomato, Long Bean, Color Pepper, Cucumber and so on.

Tips for Installation:

* The height of the luminaire from the plant
4-9 Watt: Between 30-70cm, ensure covering all plants with light.
9-18 Watt: Between 50-100cm, ensure covering all plants with light.

* Reference fill time
It is recommended to add 12-14 hours of light a day. It can be flexibly determined by the plan growth phase to determine the time of the light.