FloraFlex 18W Clone LED Incubator Light | 2-Pack

The 9000 Kelvin color temperature produces a cool-spectrum light that mimics early morning or overcast conditions, which encourages compact, stocky growth rather than stretching. This spectrum promotes robust root development during the critical rooting phase while keeping internodal spacing tight. The cooler spectrum also generates less heat stress on sensitive young clones compared to warmer color temperatures, creating ideal conditions for successful rooting.

FloraFlex recommends using two strips per shelf level for optimal coverage. Each box includes 2 strips, so one box equips a single shelf. For multi-tier propagation racks, simply multiply the number of shelves by two to determine total strips needed. The 42.75-inch length is designed to fit standard 4-foot shelving, and the 120-degree beam angle from two strips provides complete, even coverage across typical propagation tray configurations.

Yes, because each strip draws only 18W (0.15 amps at 120V), you can connect up to 100 strips on a single 20-amp circuit. This equals 1,800W total, which is within the safe continuous load of a 20-amp circuit (typically rated for 2,400W maximum). This exceptional daisy chain capability dramatically reduces installation complexity for large propagation operations, eliminating the need for multiple circuits and complex electrical planning.

The water-resistant housing and connectors protect the electronics from moisture exposure common in propagation environments, including high humidity, condensation, and incidental water splashing from misting or watering activities. However, these lights are not waterproof and should not be submerged or exposed to direct water streams. They're designed to handle the elevated humidity levels inside propagation domes and the occasional moisture contact that occurs during routine propagation care.

Start with the strips positioned 6-12 inches above your clones or seedlings. The low 18W power output and cool 9000K spectrum minimize heat stress, allowing closer positioning than higher-wattage lights. Monitor your clones' response and adjust height as needed—if you notice stretching, lower the lights slightly; if you see any signs of light stress (rare with these low-wattage strips), raise them. The zip tie mounting slots make height adjustments quick and tool-free.

These lights are specifically optimized for the cloning and early propagation stage. While they'll keep plants alive through vegetative growth, the 9000K spectrum and relatively low 46.8 µmol/s output per strip aren't ideal for mature vegetative growth or flowering. Once your clones have established robust root systems (typically 7-14 days), transition them to broader-spectrum lighting with higher intensity for optimal development through later growth stages.

The integrated zip tie slots allow you to secure the strips to shelving, hanging wires, or rack frames using standard zip ties (not included). Simply thread zip ties through the slots and around your mounting surface, then tighten to secure. This method provides stable mounting while allowing easy repositioning—just cut the zip ties and remount at a different height as needed. For shelving units, you can hang the strips from the shelf above using wire or chains attached through the zip tie slots.

The ultra-low 18W draw per strip provides several critical advantages for propagation operations. First, it enables the massive daisy chain capacity (100 strips per circuit), dramatically simplifying electrical installation. Second, it minimizes heat generation, which is crucial in enclosed propagation environments where excess heat can stress sensitive clones. Third, it reduces operating costs—even running 100 strips 18 hours per day costs only about $0.30-0.40 per day at typical electricity rates. Finally, it allows dense shelf configurations without circuit overload concerns.