Clip-On LED Aquarium Light Algae Control

This LED aquarium light comes in five fixed lengths: 20 cm (3 W), 30 cm (4 W), 40 cm (5 W), 50 cm (6 W), and 60 cm (7 W), each designed for corresponding tank widths (20–30 cm up to 60–70 cm). All units share the same compact cross-section (7.5 × 5.5 cm), PP housing, and DC 5 V input. The 20 cm and 30 cm variants deliver fixed blue and white light; the 40 cm, 50 cm, and 60 cm versions include manual colour switching (three modes: white; red + blue + green; red + blue + white + green) and brightness adjustment. Power cords measure 1.5 m for smaller units and 2 m for larger ones. Product weights scale linearly: 200 g (20 cm), 270 g (30 cm), 350 g (40 cm), 400 g (50 cm), and 500 g (60 cm). The light’s spectral output promotes chlorophyll absorption in aquatic plants while discouraging rapid algae blooms — especially useful in nutrient-rich or CO₂-injected aquascapes. Its directional beam minimises light spill and glare, preserving tank clarity and reducing reflections on UK home aquarium cabinet glass. Designed for everyday UK aquarists — from beginners setting up their first 20-litre nano tank to experienced hobbyists curating Dutch-style or Nature Aquarium layouts — where reliability, simplicity, and visual fidelity matter more than complex app control.