Grow Spirulina and other microalgae with confidence using our ultra-thin, waterproof LED light—designed specifically for placement under 10-gallon aquariums. This compact 10W, 5V light measures just 19 x 3.5 inches and is only 0.6 cm in height, making it perfect for tight, efficient setups.

How much light your culture actually wants, and why heat is the real risk, is explained in our guide.

Encased in durable, fully-cast epoxy, this unit is splashproof and water-resistant, making it ideal for labs, classrooms, and home aquariums. It plugs in via USB for flexible power options and includes a variable output option so you can adjust light intensity based on your specific culture's needs.

Delivering optimized wavelengths for photosynthesis and producing a small amount of heat, this light helps maintain a warm environment for accelerated algal growth. Whether you're a researcher, educator, or hobbyist, this reliable, space-saving light is the perfect choice for algae cultivation.

5 volts, 10 watts, comes with a USB lead.

✅ Key Features:

• 🔋 Power: 10W, 5V (USB-powered)

• 📏 Size: 19” x 3.5” x 0.6 cm (height)

• 💡 Light Output: Optimized for photosynthesis

• 💧 Waterproof: Fully potted epoxy-cast body

• 🌡️ Heat Output: Generates mild warmth to support culture growth

• 🔄 Control: Optional variable intensity control

• 🧪 Use Cases: Ideal for Spirulina and other microalgae cultivation especially for education!

• 🧱 Fits: Perfectly beneath standard 10-gallon aquariums

• 🧼 Safe: Resistant to spills and splashes