💧 Crystal Clear Water for Small Aquariums – Mini GKM3W Internal UV System for Tanks up to 20Ga
 
Battling green, cloudy aquarium water? The Mini Green* Killing Machine (GKM) 3W UV System is here to help! Perfect for aquariums up to 20Ga, this powerful yet compact, easy-to-use UV system will clear up your tank in days.
 
How It Works:
 
The Mini GKM3W uses advanced UVC technology to control water contaminants, in turn keeping your water clean and clear. Its unique design allows the water to flow directly over the UVC bulb, providing maximum efficiency with minimal effort. This results in cleaner water and fewer water changes.
 
✅  Key Features:
 
Effective UVC Technology: Clears green water and reduces cloudiness with powerful UVC rays.
Perfect for Smaller Aquariums (up to 20Ga): Ideal for nano tanks, small fish tanks, or betta setups.
No Installation Required: Simple submersible design with easy suction cup mounting. Can be discreetly placed behind decorations or plants.
LED Indicator for UV Bulb Replacement: The built-in LED will signal when it's time to replace the UV bulb. Replacing the bulb is easy and requires no tools.
Long-Lasting UV Bulb: Bulbs last 6-9 months with regular use, offering consistent performance and crystal-clear water.
Sealed UV Bulb Design: Protects the UV housing from degradation, ensuring optimal performance with every bulb change.
Energy-Saving: After your water is clear, turn off the Mini GKM3W to prolong the life of the 3W UV bulb.
 
Why Choose the Mini GKM3W?
 
Proven Success: Over 3/4 million units of GKM shipped worldwide, trusted by aquarium owners across the globe.
Compact & Effective: Designed specifically for smaller aquariums but still delivers powerful UVC sterilisation.
UL for Safety: UL & cUL Listed for product safety.
Ships domestically: Fast & reliable shipping via UPS, with local customer service and spare parts available from our local support team.
 
What's Included:
UV System with Water Pump
Sealed 3W UV Bulb
Control Box
 
Additional Info:
Dimensions: 2.5" x 2.3” x 7.4” (excluding control box)
Replacement Bulb: AA03W-UVC
 
Please note: The Mini GKM3W is not a filter. For best results, use in conjunction with your aquarium filter system to maintain optimal water quality.
 
For more information, setup videos, and customer support, visit our website: GKM Aquarium Support
 
Watch our helpful videos:
Product Overview: Watch Here
Pump Cleaning: Watch Here
 
* Controls Green Water
* All GKM products are manufactured in an EPA Registered Establishment
* Lamp contains Mercury. Manage in Accordance with Sate Disposal Laws