SunBlaster High Output LED 6400K Strip Light – 36 Watt 3 Foot

The SunBlaster High Output LED 6400K Strip Light (36 Watt, 3 Foot — Item# SL0900703) is a purpose-built horticultural LED fixture designed for indoor growing environments. Running at 36 watts and emitting a 6400K daylight spectrum, it targets the blue-heavy range that supports vegetative growth, seedling development, and propagation. SunBlaster’s Self-Cooling Technology eliminates the need for cooling fans, keeping the fixture quiet and compact while pushing sustained output across a rated life of 50,000 hours.

SunBlaster High Output LED 6400K Strip Light Specifications

The specifications below apply to the 3-foot, 36-watt model (SKU SL0900703). Color temperature, rated life, beam angle, and voltage range are drawn from the SunBlaster product line description and apply to this model. Power consumption of 36 watts is specific to the SL0900703.

Specification	Value
Brand	SunBlaster
Item Number	SL0900703
Power Consumption	36 Watts
Colour Temperature	6400 Kelvin
Rated Life	50,000 Hours
Lighting Angle	120°
Voltage	110+ Volts
Fixture Length	3 Feet (approximately 914 mm)
Weight	1.50 lb (0.68 kg)
Cooling Method	Self-Cooling Technology (passive, no fan)

Why Choose the SunBlaster High Output LED 6400K Strip Light

The SunBlaster LED strip light line was developed specifically for horticultural use, with an emphasis on sustained output and low heat generation. Here is what distinguishes the 3-foot, 36-watt model in practical terms:

• Self-Cooling Technology with no moving parts. SunBlaster’s passive cooling design removes the need for built-in fans. The fixture stays quiet during operation, and there are no fan motors to fail over time. This is relevant for propagation environments where airflow disruption around delicate seedlings is undesirable.
• 36-watt output in a strip-light form factor. The 3-foot length makes this fixture well-suited for propagation trays, seedling racks, and multi-shelf setups where a compact, low-profile fixture is needed. At 36 watts it draws meaningfully more power than the 1-foot (12W) and 2-foot (24W) models in the SunBlaster lineup, making it appropriate for larger tray coverage.
• 6400K daylight spectrum. The blue-dominant 6400 Kelvin color temperature supports compact, leafy vegetative growth. It is a practical choice for early-stage growing: seedlings, rooted cuttings, and plants in vegetative phase before transitioning to a bloom spectrum.
• 50,000-hour rated life. A fixture with a 50,000-hour rated life running 18 hours per day has a projected operational lifespan of approximately 7.6 years at that duty cycle. Lower lamp-replacement frequency reduces ongoing maintenance and consumables cost.
• Consistent horticultural focus. SunBlaster designed this LED lineup for indoor horticulture rather than general-purpose or commercial illumination. The 6400K spectrum, lightweight housing, and strip format reflect the requirements of propagation and vegetative growing stations rather than overhead warehouse or retail lighting.

Best Uses for the SunBlaster High Output LED 6400K Strip Light

The 3-foot, 36-watt SunBlaster LED is most effective in environments where a low-profile strip light with a full-daylight spectrum is a better fit than an overhead HID or broad-area LED panel. Typical applications include:

• Propagation trays and clone domes. The narrow strip format positions light directly above a standard propagation tray. At 6400K, the spectrum encourages the compact, rapid growth needed before transplant. Growers using a heated propagation kit often pair it with a strip light mounted just above the dome for consistent, even coverage.
• Seedling and vegetative racks. Multi-shelf growing systems benefit from strip lights that fit within the vertical clearance between shelves. The 3-foot length corresponds to standard propagation tray widths, making it straightforward to mount one fixture per shelf without gaps in coverage.
• Supplemental lighting in grow tents. In a grow tent running an HPS or broad-spectrum LED as the primary light source, a SunBlaster strip can be positioned laterally to address shaded lower canopy zones or side shoots. The 110+ volt input is compatible with standard North American outlets.
• Mother plant stations. Keeping mother plants in vegetative state requires a reliable blue-spectrum source. A 3-foot strip positioned above a dedicated mother plant area delivers consistent 6400K light without the heat output associated with T5 fluorescent fixtures of comparable wattage.
• Germination chambers and humidity tents. The passive cooling design means the fixture does not introduce a fan airflow source near germinating seeds or freshly rooted cuttings, where stable humidity and temperature are important.

SunBlaster LED 6400K vs Similar Products

The SunBlaster 36-watt, 3-foot LED strip is one model in a three-size lineup that includes 1-foot (12W, SL0900700) and 2-foot (24W, SL0900701) variants. Choosing among them is straightforward: the fixture length and wattage scale together, so coverage area determines the right size. A single 3-foot strip is appropriate for a full standard propagation tray; the 1-foot or 2-foot models suit smaller insert trays or situations where multiple shorter fixtures are preferable to a single longer one.

The primary alternative category for this application is T5 fluorescent strip lighting. T5 fixtures at comparable wattages have been a standard in propagation for many years and remain widely available. The practical differences between a T5 and the SunBlaster LED in this context are:

• Lamp replacement: T5 tubes typically need replacement after 10,000–20,000 hours of use. The SunBlaster LED’s 50,000-hour rated life reduces the frequency of lamp changes. A T5 designer fixture with multiple tubes delivers higher total lumen output across a wider footprint, but requires periodic bulb replacement.
• Heat output: T5 tubes generate more radiant heat than LED strips of similar wattage. In propagation environments with clone domes or humidity tents, managing heat from the light source is relevant. The SunBlaster’s passive cooling design and LED efficiency reduce this concern.
• Form factor: Both T5 strips and SunBlaster LEDs are low-profile and shelf-mountable. The SunBlaster LED fixture is lighter (1.5 lb for the 3-foot model) and does not require ballast replacement.
• Cost over time: The LED’s longer rated life and absence of consumable tubes may offset a higher initial purchase price compared to a basic T5 fixture depending on hours of operation and electricity cost in the grower’s location.

Growers evaluating high-power LED panel options for full canopy coverage rather than a propagation strip should consider a dedicated grow light such as the Gavita Pro 1700e LED, which targets mature vegetative and flowering canopy coverage at a different scale and price point than a strip light.

Compatibility

The SunBlaster 36-watt LED strip light operates on 110+ volt AC power, making it compatible with standard North American household and commercial outlets. No external ballast or driver is required — the fixture is a self-contained unit that plugs directly into a grounded outlet.

The 3-foot (approximately 914 mm) length is designed to fit above standard propagation trays. It can be daisy-chained or used alongside other strip lights of the same series to extend coverage across wider growing areas, subject to total circuit load limits for the outlet being used.

The fixture is suited for indoor environments. Because it uses passive cooling (no integrated fan), it functions quietly alongside humidity-sensitive propagation setups including clone domes and humidity tents. Growers running multi-level rack systems should verify that the fixture’s 1.5 lb weight and mounting hardware are compatible with their specific shelf or racking system.

For growers using a complete propagation station, the SunBlaster LED strip is designed to work in conjunction with propagation trays, heat mats, and dome kits. It can be mounted on adjustable hanging clips or fixed brackets depending on the rack configuration.

Usage Guidelines

The following guidelines are based on general horticultural LED strip light practice and the product specifications from the canonical description. SunBlaster does not publish a specific coverage chart for this model in the available documentation.

Photoperiod recommendations by growth stage:

• Germination: 18 hours on / 6 hours off is common for seedlings under 6400K LED strips. Some growers use 20/4 during germination.
• Clones and propagation: 18/6 to maintain vegetative signaling without stressing cuttings. Position the fixture 2–6 inches above the dome or canopy surface for even coverage, adjusting based on observed stretch or compactness.
• Vegetative mother plants: 18/6 or continuous light (24/0) depending on species and grower preference. At 36 watts over a 3-foot span, the fixture is most effective as a dedicated source for a compact mother plant station rather than as sole-source lighting for a full vegetative tent.

Mounting height guidance: Strip lights in the 30–50 watt range are typically mounted 2–8 inches above the canopy for seedlings and clones, where achieving uniform coverage at low intensity is the goal. Moving the fixture farther from the canopy reduces intensity and spreads the 120° beam across a wider area. Closer mounting increases intensity and narrows effective coverage width.

Circuit loading: At 36 watts per fixture, ten SunBlaster 3-foot strips would draw 360 watts, which is well within a standard 15-amp, 120-volt circuit (rated at 1,800 watts continuous). Most rack setups use 2–6 strips per circuit without issue, but always verify total connected load before adding fixtures to an existing circuit.

How to Install the SunBlaster LED Strip Light

1. Inspect the fixture before installation. Check the housing, cord, and plug for any visible damage before powering on. Do not use a damaged fixture.
2. Determine mounting position. Identify the shelf, rack, or overhead surface where the fixture will mount. For propagation trays, position the fixture centered above the tray at a starting height of 3–6 inches above the dome or canopy surface.
3. Mount the fixture. Use compatible mounting clips, adhesive strips, or hanging hardware appropriate to the installation surface. The 3-foot fixture weighs 1.5 lb — ensure the mounting point is rated for this load. Do not mount in a way that blocks the fixture’s passive cooling surfaces.
4. Connect to power. Plug the fixture’s cord into a grounded 110+ volt outlet. The SunBlaster LED does not require an external ballast or driver. Verify that the total wattage on the circuit does not exceed safe continuous load limits (typically 80% of the circuit breaker rating for continuous loads).
5. Power on and verify operation. Switch on the outlet or timer. The LEDs should illuminate immediately with no warm-up period. Verify even light distribution across the target area.
6. Connect to a timer if using a photoperiod schedule. Plug the fixture into a compatible outlet timer set to the desired photoperiod (e.g., 18 hours on / 6 hours off for vegetative growth). The SunBlaster LED is compatible with standard plug-in mechanical and digital outlet timers.
7. Adjust height as plants develop. As seedlings or clones grow taller, raise the fixture to maintain the appropriate canopy distance. Monitor for light stress (bleaching, curling) or stretch (elongated internodes) and adjust height accordingly.

Sources & Further Reading