Clip on LED Lamp RS-S400 for Fish Aquarium
The RS Electrical RS-S400 is an 8W clip-on LED aquarium light for small and nano tanks, with a compact 22 × 6 × 12 cm body, a wide 100–240V input and an adjustable clamp that fixes to the rim or back glass. It is a simple, affordable way to add bright, energy-efficient light to a fish tank or bowl without any fixture intruding into the water — plug-and-play lighting for desktop and nano aquariums.
Why choose the RS-S400?
- 8W energy-efficient LED light for small aquariums and bowls.
- Compact 22 × 6 × 12 cm design that clips neatly onto the tank.
- Wide 100–240V input for reliable use on Indian mains.
- Adjustable clamp that fixes securely to the rim or back glass.
- Space-saving, keeping the inside of the tank clear.
Specifications
| Brand | RS Electrical |
| Model | RS-S400 |
| Power | 8 watts |
| Size | 22 × 6 × 12 cm |
| Voltage | 100–240V, 50–60 Hz |
| Type | Clip-on LED |
| Best for | Small and nano aquariums, bowls |
Which tanks is it best for?
The RS-S400 suits small and nano aquariums and fish bowls where a clip light is the easiest option. It provides bright display light for fish-only setups and supports easy low-light plants. For a flexible full-spectrum planted clip light, see the RS-S13. See our aquarium light guide.
How to use it
Clip the light onto the rim or back glass, aim it across the tank, and run it 6–8 hours a day on a timer. Keep the photoperiod tight on a small tank or bowl, include a dark night period, and keep it out of direct sun to control algae. Route the cable with a drip loop and keep the adaptor above water. See how many hours should aquarium lights be on.
Frequently asked questions
What tank size is the RS-S400 for?
Small and nano aquariums and bowls. Its compact 22 cm body clips neatly onto small tanks.
Will it work on Indian mains?
Yes. It accepts a wide 100–240V, 50–60 Hz input, suitable for use across India.
Does it clip on easily?
Yes. The adjustable clamp fixes securely to the rim or back glass, keeping the tank interior clear.
Is it good for plants?
It works for easy low-light plants and bright fish display. For dedicated planted growth, consider the RS-S13.
How many hours should I run it?
6–8 hours a day on a timer, kept tight on a small tank or bowl, with a dark night period.
Choosing a clip light? Read the complete aquarium light guide.
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