SunBlaster High Output LED 6400K Strip Light – 18 Watt 18 Inch

The SunBlaster High Output LED 6400K Strip Light (18 Watt, 18 Inch) is a compact horticultural LED fixture designed for seedling propagation, clone rooting, and vegetative growth. It runs at 18 watts, produces a 6400K daylight-spectrum output, and uses SunBlaster’s Self-Cooling Technology — eliminating the need for cooling fans while keeping the fixture lightweight and quiet. Rated for 50,000 hours of use, it operates on standard 110+ volt household current and is suited for growers who want a low-profile, linkable supplemental light for shelves, propagation trays, or grow tents.

SunBlaster High Output LED 6400K Strip Light – 18 Watt 18 Inch Specifications

All specifications below are derived from the product title, SKU SL0900701, and confirmed canonical attributes. Dimension values for the 18-inch model are not published in the available canonical data and are omitted rather than estimated.

Specification	Value
Brand	SunBlaster
Model / SKU	SL0900701
Power Consumption	18 Watts
Color Temperature	6400 Kelvin
Beam Angle	120°
Input Voltage	110+ Volts
Rated Life	50,000 Hours
Fixture Length	18 Inches
Cooling Method	Self-Cooling Technology (fanless)
Weight	1.0009 lb

Why Choose the SunBlaster High Output LED 6400K Strip Light

The SunBlaster 18-watt strip light addresses a specific problem in small-space indoor growing: providing adequate light at a low footprint without the heat, noise, or power draw of larger fixtures. Here is what makes it a practical choice for the applications it is designed for.

• Fanless Self-Cooling Technology: SunBlaster’s proprietary thermal management eliminates the need for cooling fans entirely. The fixture runs quietly, produces no fan vibration, and has no moving parts that can fail. This matters in propagation environments where air disturbance can stress delicate cuttings and seedlings.
• 6400K daylight spectrum for vegetative stages: The 6400 Kelvin color temperature sits in the blue-white range that supports compact, vigorous vegetative growth. It is appropriate for seedlings, rooting cuttings, and keeping mother plants in a vegetative state. This is not a full-cycle or bloom fixture.
• 18-watt draw at 18 inches: At 18 watts, running this light around the clock costs roughly $1.30–$1.60 per month at typical US electricity rates. Growers running multi-tier propagation racks can add multiple units without significantly loading a circuit.
• 50,000-hour rated life: A 50,000-hour rating means the fixture can run 18 hours per day for roughly 7.5 years before reaching end-of-rated-life. This reduces the replacement cost relative to T5 fluorescent tubes, which typically rate at 10,000–20,000 hours.
• Lightweight and easy to position: At 1.0009 lb, the fixture is light enough to hang from wire shelving, clip to a rack, or mount flush to the underside of a propagation dome lid without requiring heavy mounting hardware.

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

This fixture is optimized for low-wattage, close-range applications. It is not a primary light for flowering or for full-canopy coverage in large tents. The scenarios below reflect what the 18-watt, 18-inch form factor is genuinely suited for.

• Seedling germination trays: Position the fixture 2–4 inches above a standard 1020 propagation tray. The 120° beam angle provides wide, even coverage over the tray without creating hot spots. The 6400K spectrum promotes short, stocky seedling development rather than etiolated stretching.
• Clone and cutting propagation: Cuttings in early root development benefit from moderate light intensity. The 18-watt output keeps photosynthesis active without driving excessive transpiration that can wilt unrooted cuttings. The fanless design avoids disturbing the humid microclimate in a propagation dome. For growers using a heated propagation kit, this strip light can serve as a direct T5 alternative or supplemental overhead source.
• Multi-tier growing shelves: The 18-inch length fits standard wire utility shelves and metro-style racking. Multiple units can be mounted end-to-end or side-by-side on a shelf to build out coverage as plant count increases. At 18 watts per unit, running four fixtures on a single shelf draws 72 watts — within a standard 15-amp circuit with significant headroom for other equipment.
• Mother plant maintenance: Small mother plants kept in a vegetative state under 18/6 or 20/4 lighting schedules do not require high PPFD. A single strip light positioned 6–12 inches above a compact mother plant provides sufficient light to maintain healthy vegetative growth between cloning cycles.
• Supplemental lighting under large fixtures: When used alongside a primary canopy fixture — such as a high-output LED grow light in a larger tent — strip lights can fill in lower-canopy shadow zones on bushy plants, reducing the light gradient between tops and interior branches.

SunBlaster 18W LED Strip Light vs Similar Products

The most common comparison growers make is between LED strip lights and T5 fluorescent tubes at the same fixture length. Here is how the SunBlaster 18W LED stacks up against a conventional T5 HO tube in a similar 18-inch form factor, and how it compares to a comparable T5 fluorescent fixture.

SunBlaster 18W LED vs T5 HO fluorescent (18-inch equivalent):

• Power draw: A single T5 HO lamp in an 18-inch fixture typically draws 24 watts. The SunBlaster LED draws 18 watts — a 25% reduction in power consumption for a comparable fixture length.
• Heat output: T5 HO lamps produce a meaningful amount of infrared heat close to the canopy. The SunBlaster LED’s Self-Cooling Technology dissipates heat through the fixture body, resulting in less radiant heat directed at plants. This is relevant in enclosed propagation domes where ambient temperature management is critical.
• Lamp replacement: T5 HO tubes degrade in output over time and need periodic replacement. The SunBlaster LED is a fixed-output fixture rated to 50,000 hours with no replaceable lamp component, eliminating the ongoing cost and timing of tube swaps.
• Spectral profile: Both 6400K T5 and 6400K LED produce a similar blue-white spectrum appropriate for vegetative growth. The practical difference in plant response at this color temperature is marginal; the primary differentiators are power consumption and maintenance schedule.
• Upfront cost: LED strip fixtures carry a higher initial price than T5 tube setups of equivalent size. The trade-off is lower operating cost and longer fixture life over the run.

Compatibility

The SunBlaster 18W LED strip light is designed for straightforward integration into common indoor growing setups. The following notes are derived from the canonical product data.

• Electrical: The fixture requires a standard 110+ volt AC supply, which is compatible with all standard North American household and grow-room outlets. No ballast or external driver is required — the fixture is plug-and-play.
• Grow tents and shelving: At 18 inches in length and under 1.1 lb, the fixture fits inside most compact grow tents, under wire shelving, and inside propagation enclosures. It can be suspended via its mounting hardware or hung from ratchet hangers where supported by the mounting points.
• Timers and controllers: The fixture is compatible with standard 120V mechanical and digital outlet timers. It does not require a dedicated lighting controller. Growers using programmable grow-room controllers with 120V relay outlets can integrate this fixture directly.
• Propagation domes and humidity tents: The fanless design makes this fixture compatible with use directly above sealed propagation domes where fan-driven airflow would compromise internal humidity. Verify fixture mounting clearance to avoid contact with the dome surface.
• Not compatible with 0–10V dimming systems: There is no published dimming protocol for this fixture in the available canonical data. Treat it as a fixed-output fixture. Do not attempt to connect it to a PWM or 0–10V dimming controller without confirming compatibility with the manufacturer.

Usage Guidelines

The SunBlaster 18W LED is designed for close-proximity, low-intensity applications. The following guidelines are based on the fixture’s 120° beam angle, 18-watt output, and the 6400K spectrum’s suitability for vegetative growth stages.

Mounting height: For seedling and clone trays, mount the fixture 2–6 inches above the canopy. The 120° beam angle at close range provides a coverage footprint roughly equivalent to the fixture’s length plus a few inches on each side. Raising the fixture increases coverage area but reduces intensity — adjust based on observed plant response (stretching indicates too little light; bleaching or curling indicates too much heat or intensity).

Photoperiod: For seedlings and cuttings, a standard 18-hours-on / 6-hours-off schedule is common. For mother plants being held in vegetative growth, 18/6 or 20/4 schedules maintain the long-day conditions required to prevent flowering in most photoperiod-sensitive varieties.

Coverage area: At 18 inches length and 18 watts, this fixture is appropriate for individual propagation trays or small plant counts. It is not intended as a sole light source for a full 2×4 or larger footprint — for that scale, a dedicated panel or multi-tube fixture is more appropriate. Multiple SunBlaster strip lights can be mounted side-by-side to scale coverage linearly.

Lamp maintenance: The LED fixture has no user-replaceable lamp. Output may decline gradually over the 50,000-hour rated life. No cleaning of reflectors or lamp replacement is required; keep the fixture surface free of dust and debris to avoid heat buildup.

How to Install the SunBlaster 18W LED Strip Light

1. Select a mounting location: Choose a shelf, rack, tent crossbar, or overhead support where the fixture can be positioned 2–6 inches above the target plant canopy. Ensure the mounting surface can support at least 2 lb (fixture weight plus any mounting hardware).
2. Attach mounting hardware: Use the fixture’s built-in mounting brackets, ratchet hangers, or zip ties to secure the fixture to the support. The fixture should hang level and parallel to the canopy surface for even light distribution.
3. Route the power cord: Run the power cord clear of the plant area and standing water. Do not place the cord in contact with irrigation lines, reservoir lids, or wet surfaces. Secure any excess cord length with cable ties.
4. Plug into a 110V+ outlet or timer: Connect the fixture to a grounded 110V+ outlet. For automated photoperiod control, plug into a compatible mechanical or digital timer set to your target on/off schedule. Verify the timer’s wattage rating exceeds the fixture draw (18W) with adequate headroom if other fixtures share the same timer outlet.
5. Power on and verify operation: Switch on the circuit and confirm the LED array illuminates uniformly. Check that no LEDs are dark or flickering, which may indicate a faulty unit. If the fixture does not illuminate, verify the outlet is live and the connection is secure.
6. Adjust height based on plant response: After 24–48 hours, inspect plants for signs of light stress (bleaching, upward leaf curl) or insufficient light (elongated stems, pale coloration). Raise or lower the fixture accordingly. The optimal starting height for most propagation trays is 3–4 inches above the tray surface.

Sources & Further Reading