Apache Tech AT120RB: A Narrow-Band Flowering Panel
The AT120RB belongs to Apache Tech's 120 series, a family of small panels that share one housing and differ by diode color. This version carries red and blue diodes only, with no white chips in the mix. That puts nearly all of its output into the wavelengths chlorophyll absorbs most strongly. Apache Tech's EU distributor lists the series at 1.9A per unit and 120 lumens per watt. Diodes are rated for 50,000 hours, which covers many years of twelve-hour flowering cycles. The same listing shows two optics choices, a tight 14° lens or a wider 50° spread. The narrow lens throws light deeper into a tall canopy, while the wide lens covers more floor at shallower depth. The housing is polished aluminum, which sheds heat passively and wipes clean after a spray day. A single panel is small enough to hang in a closet, a propagation shelf or a gap in a larger room. It is also common to pair it with a white fixture, so red and blue top up flowering while white carries the base spectrum.
Where a Red and Blue LED Grow Light Earns Its Place
A red and blue led grow light makes the most sense once plants are past veg and building flowers. Red drives flowering and fruit set, and blue keeps internodes tight so the canopy does not stretch too far. Many growers run a panel like this as a bloom booster beside an existing white light instead of as the only source. Inspecting plants under purple light is hard, because pests, deficiencies and color changes all look muted. Keep a white work light or a headlamp nearby for scouting and switch the panel off while you check leaves. The tighter lens option suits taller plants, while the wider lens is kinder to flat, trained canopies. Start the panel higher than you think and lower it gradually while watching the top leaves. Be clear about the limits before you plan a room around it. No verified coverage or PPFD figure is listed for this model, so size the space with a PAR meter. The embedded video below shows the panel running, which helps when judging hang height and spread.
Key Features
- Red and blue diode array: Concentrates output in the bands plants use hardest during flowering and fruit set.
- Two lens options: A 14° lens for deeper canopy penetration or a 50° lens for wider, flatter coverage.
- Polished aluminum housing: Passive heat shedding and an easy surface to clean in humid rooms.
- Low current draw: The series draws about two amps, so several panels share a household circuit.
- 50,000-hour diodes: Long rated life keeps replacement off the calendar for years of cycles.
Technical Specifications
| Specification | Value |
|---|---|
| Model | AT120RB |
| Series | Apache Tech 120 series |
| Spectrum | Red and blue diodes (no white) |
| Growth Phase | Flowering and fruiting; supplemental bloom light |
| Current | 1.9A per unit (distributor listing) |
| Efficacy | 120 lumens per watt (distributor listing) |
| Lens Options | 14° or 50° |
| Housing | Polished aluminum, passive cooling |
| Rated Lifespan | 50,000 hours |