Boyu · Bar / clip-on
CB Ultrathin LED
- Made for tanks
- 50–90 cm tanks
- Power
- 26–55 W
Low-tech planted and community tanks where you just need decent white light.
5 models
Eheim · Bar / clip-on
Eheim powerRGB
powerRGB is a low-voltage RGB LED bar meant to sit alongside your main light and add colour. On its own it gives a fixed output. Paired with the RGBcontrol+e controller (sold separately) you can blend colours, run sunrise and sunset, and add moonlight.
Updated
21.9–30.7 W3 models
Will it suit my tank?
cm long
Best for
Tanks that already have a white main light and where you want richer reds and greens, or smooth dawn and dusk.
Worth knowing
It is a supplementary light, not a full planted-tank light on its own, and the colour control needs an extra controller.
What stands out
- Adds red, green and blue to lift plant and fish colour
- Three lengths for tanks from about 79 to 125 cm
- Roughly 1,550 to 2,170 lumens
- Low-voltage, 21.9 to 30.7 W
Models and specs
| Model | Made for tanks | Length | Power | Output | Rated colour temperature |
|---|---|---|---|---|---|
| 771 mm | 78.7–95.1 cm | 77.1 cm | 21.9 W | 1,553 lm | 4900 K |
| 953 mm | 97.3–113.3 cm | 95.3 cm | 26.3 W | 1,863 lm | 4900 K |
| 1074 mm | 109.4–125.4 cm | 107.4 cm | 30.7 W | 2,174 lm | 4900 K |
- Brand
- Eheim
- Voltage
- Low voltage
- Control
- Optional RGBcontrol+e (sold separately)
- Water type
- Freshwater and marine
- Warranty
- 3 years
Figures from the maker's published specifications. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all lights
Boyu · Bar / clip-on
ZN WiFi LED
- Made for tanks
- 45–90 cm tanks
- Power
- 40–72 W
Planted tanks from 45 to 90 cm where you want scheduling and colour control on a budget.
4 models
Chihiros · Bar / clip-on
A II Max
- Made for tanks
- 30–140 cm tanks
- Power
- 32–96 W
Medium-light planted tanks from nano to large that want a simple, bright, app-controlled bar at a fair price.
6 models
Chihiros · Bar / clip-on
B Series
- Made for tanks
- 20–120 cm tanks
- Power
- 12.7–51.3 W
Low to medium demand planted tanks and beginners who want app scheduling without spending much.
7 models
Frequently asked questions
Quick answers about the Eheim powerRGB, drawn from its specs.
What size tank does the Eheim powerRGB fit?
It comes in 3 sizes: 771 mm for 78.7–95.1 cm tanks, 953 mm for 97.3–113.3 cm tanks, 1074 mm for 109.4–125.4 cm tanks. Choose the one that matches your tank length.
How much power does the Eheim powerRGB use?
From about 21.9 W on the smallest model to 30.7 W on the largest, at full output. Most planted tanks run lights below full power.
Who is the Eheim powerRGB best for?
Tanks that already have a white main light and where you want richer reds and greens, or smooth dawn and dusk.
Is there anything to watch out for with the Eheim powerRGB?
It is a supplementary light, not a full planted-tank light on its own, and the colour control needs an extra controller.
What are the alternatives to the Eheim powerRGB?
Other lights worth comparing: Boyu CB Ultrathin LED, Boyu ZN WiFi LED, Chihiros A II Max. Add any of them to the compare table to see the specs side by side.