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
Twinstar · Bar / clip-on
Twinstar SM Series
The original Twinstar S light (later labelled SM), a bright fixture on fixed metal legs. It predates app control, so it is simply on or off at full output.
Updated
23–84 W4 models
Will it suit my tank?
cm long
Best for
Rimless tanks matched to the exact light length where you run CO2 and use a plug timer.
Worth knowing
Legs don't adjust and there is no dimming mentioned, so it must match your tank length.
What stands out
- Four sizes from 30 cm to 90 cm
- 6700 K daylight output
- Fixed metal legs for rimless tanks
- Strong output for its era, up to 5,250 lm
Models and specs
| Model | Made for tanks | Length | Power | Output | Colour temp |
|---|---|---|---|---|---|
| 300SMTWSS300 | 30 cm | 30 cm | 23 W | 1,200 lm | 6,700 K |
| 450SMTWSS450 | 45 cm | 45 cm | 31 W | 1,750 lm | 6,700 K |
| 600SMTWSS600 | 60 cm | 59.7 cm | 52 W | 3,250 lm | 6,700 K |
| 900SMTWSS900 | 90 cm | 89.9 cm | 84 W | 5,250 lm | 6,700 K |
- Brand
- Twinstar
- Spectrum
- 400 to 700 nm
- Colour temperature
- 6700 K
- Mounting
- Fixed metal rim legs
Figures from Glass Aqua's product listing. 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 Twinstar SM Series, drawn from its specs.
What size tank does the Twinstar SM Series fit?
It comes in 4 sizes: 300SM for 30 cm tanks, 450SM for 45 cm tanks, 600SM for 60 cm tanks, 900SM for 90 cm tanks. Choose the one that matches your tank length.
How much power does the Twinstar SM Series use?
From about 23 W on the smallest model to 84 W on the largest, at full output. Most planted tanks run lights below full power.
Who is the Twinstar SM Series best for?
Rimless tanks matched to the exact light length where you run CO2 and use a plug timer.
Is there anything to watch out for with the Twinstar SM Series?
Legs don't adjust and there is no dimming mentioned, so it must match your tank length.
What are the alternatives to the Twinstar SM Series?
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.