Description
SunSun CUV-118 External UV Light Set
The SunSun CUV-118 External UV Light Set is a high-efficiency ultraviolet sterilizer designed for aquariums, ponds, and water systems. With its powerful 18W UV lamp, it effectively eliminates algae spores, harmful bacteria, and parasites, ensuring crystal-clear water and a healthier aquatic environment. Its external inline design allows easy connection with external filters or pond pumps, making it versatile for both freshwater and marine setups.
💡 Key Features
✅ UV Sterilization – Removes bacteria, algae spores, and parasites.
✅ External Inline Design – Easily integrates with filter or pump systems.
✅ Powerful UV Lamp – 18W output for medium to large aquariums and ponds.
✅ Crystal-Clear Water – Prevents green water and promotes fish health.
✅ Durable Build – Reliable SunSun construction for long-lasting use.
✅ Safe Operation – Quartz glass sleeve isolates UV lamp from water.
🐠 Suitable For
Freshwater aquariums – community tanks, planted tanks, and cichlid setups.
Marine aquariums – reef systems, corals, and saltwater fish tanks.
Garden ponds and outdoor water features.
Aquarists needing reliable sterilization for mid-to-large water systems.
⚙️ Specifications
Brand: SunSun
Model: CUV-118
Type: External UV Sterilizer Light Set
Power: 22W
- UV Power: 18W
Voltage: AC 220–240V / 50Hz
Installation: Inline with filter or pump system
Application: Freshwater & Marine aquariums, ponds
🔧 How to Use
Connect the sterilizer inline with an aquarium filter or pond pump.
Ensure all hose connections are tightly sealed.
Place the unit externally in a safe, dry position.
Switch on for continuous UV sterilization.
🧼 Maintenance Instructions
Clean the quartz sleeve regularly for best UV penetration.
Replace UV lamp periodically to maintain sterilization efficiency.
Always unplug before handling or maintenance.
Ensure continuous water flow to avoid overheating.
✅ Why Choose SunSun CUV-118 External UV Light Set?
The SunSun CUV-118 offers strong UV sterilization power with simple external installation. Perfect for aquarists and pond keepers, it ensures clean, clear, and healthy water with minimal effort.









