Gravity21 2x1 Module 30 Watt 200x100x10mm
Gravity21 2x1 Module 30 Watt 200x100x10mm
Two clusters. Thirty watts. And a light pattern that convinces even demanding SPS corals. The GRAVITY 21 is the most compact unit in the series — ideal for nano reefs, frag tanks, and precise accent lighting. No compromise on spectrum.
GRAVITY 21 · 30 W · 2×1 · 200 × 100 × 10 mm
Technical Data
| Model / SKU | GRAVITY 21 · 10165 |
| Cluster Power | 16 W per cluster (fixed, DPC) |
| System Power | 30 W · 2×1 · 2 Clusters |
| Dimensions | 200 × 100 × 10 mm |
| Power Supply | DC 24 V |
| Luminous Flux | ~938 lm |
| PPF 400–700 nm | ~46.3 µmol/s |
| PPE | 1.54 µmol/J |
| LED Optics | 60° High Power + 120° Mid Power |
| Color Rendering | CRI 97 · no Cyan gap |
| Tilt | ±20° ball joint · 360° |
| Cooling | Passive · silent · >50,000 h |
| Protection Class | IP69 (light) · IP68 (power supply) |
| Control | b.CON · WLAN/AP + Cloud · DPC |
5-Channel Spectrum
Dynamic Power Control (DPC) — all 5 channels dimmable independently. The system power remains constant at 30 W, regardless of the spectrum mix.
| Channel | Wavelength | Note |
|---|---|---|
| CH 1 · White + UV-A | 6,500 K + 390 nm | CRI 97 |
| CH 2 · Royal Blue | 460 nm + 440 nm | 99.3 % Purity |
| CH 3 · Actinic | 420 nm + 400 nm | 99.6 % Purity |
| CH 4 · Pink | ~559 nm | – |
| CH 5 · Cyan | 480 nm | 89.5 % Purity |
PAR · PUR · LUX
PPF (µmol/s) is the total light flux of the fixture — photons per second, independent of distance or area. High PPF does not automatically mean high PAR in the tank.
PAR (µmol/m²/s) is the area measurement at a tank position. PAR decreases with depth. The LiST Tool calculates the optimal configuration.
PUR weights PAR according to the absorption curve of zooxanthellae. Blue 430–480 nm is weighted more heavily — where corals absorb most efficiently.
LUX measures brightness for the human eye — biologically irrelevant for corals, but useful for visual tank assessment.
Full load 100% · directly under the center of the luminaire · 20 cm mounting height
| Depth | PAR | PUR | LUX |
|---|---|---|---|
| 0 cm | ~900 | ~729 | ~18,000 |
| 10 cm | ~580 | ~470 | ~11,600 |
| 20 cm | ~370 | ~300 | ~7,400 |
| 30 cm | ~210 | ~170 | ~4,200 |
| 40 cm | ~130 | ~105 | ~2,600 |
| 50 cm | ~80 | ~65 | ~1,600 |
| 60 cm | ~50 | ~40 | ~1,000 |
| 70 cm | ~32 | ~26 | ~640 |
| 80 cm | ~20 | ~16 | ~400 |
PAR Orientation by Animal Type
| Type | Min | Optimal | Max |
|---|---|---|---|
| Soft Corals | 30 | 50–150 | 200 |
| LPS Corals | 50 | 100–250 | 350 |
| SPS Corals | 150 | 200–400 | 600 |
| Tridacna derasa/squamosa | 150 | 250–450 | 600 |
| Tridacna maxima/crocea | 250 | 250–450 | 700 |
µmol/m²/s · by type and depth · LiST Tool
