RS Electrical RS-L13 Clip-On LED Lamp (12W) – 10000K High-Brightness Aquarium Light

The RS Electrical RS-L13 is a 12W clip-on LED aquarium light with bright 10000K output for tanks roughly 30–40 cm long, built on full-spectrum 5730 LED beads with a 360° flexible gooseneck arm and an adjustable screw clamp. The crisp 10000K colour makes whites cleaner and fish and plant colours pop, while the clip-on design keeps the fixture off the rim and out of the water — a tidy, high-brightness choice for nano and small planted tanks.

Why choose the RS-L13?

• High-brightness 10000K light for crisp, daylight-like illumination that lifts colour.
• Full-spectrum 5730 LEDs that support healthy plant photosynthesis.
• 360° flexible gooseneck arm to aim the light exactly where you want it.
• Adjustable screw clamp for rimless and framed tanks (glass ~3–12 mm).
• Space-saving, long-life design with energy-efficient LEDs.

Specifications

Which tanks is it best for?

The RS-L13 suits nano and small aquariums around 30–40 cm, including planted nano tanks and display tanks where you want bright, crisp light. Its clip-on form is ideal for rimless tanks. It supports low- to medium-light plants; add CO2 and dosing for demanding plants. See our planted aquarium lighting guide.

How to use it

Clamp the light to the rim or back glass, bend the gooseneck to aim it, and run it 6–8 hours a day on a timer (7–8 for planted tanks). Always include a dark night period and keep the tank out of direct sun. 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 is the difference between the RS-L13 and RS-S13?

Both are 12W clip-on lights with flexible arms; the RS-L13 is tuned to a bright 10000K for crisper, daylight-like output.

What tank size is it for?

Nano and small tanks around 30–40 cm. For an 8W version see the RS-L8.

Does it clip onto rimless tanks?

Yes. The adjustable screw clamp fits glass around 3–12 mm thick.

Is 10000K good for planted tanks?

Yes. 10000K full-spectrum light supports plant growth and renders greens, reds and fish colour vividly.

How many hours should I run it?

6–8 hours a day on a timer, 7–8 for planted tanks, with a dark night period.

Choosing a clip light? Read the complete aquarium light guide and the planted lighting guide.