Green Killing Machine 9 Watt UV Sterilizer with Power Head

The GKM9W Internal UV System with Power Head is for aquariums up to 50 gallons.- Helps keep your aquarium water crystal clear & reduce water changes- The GKM9W allows water flow in direct contact with the UV lamp, making it extremely efficient- Fast and easy installation, takes only 5 minutes- All GKM products are manufactured in an EPA Registered Establishment- After assembled approx. dimension 4 x 4 x 12 long. LED signals need for a UV Bulb replacement, easy change without tools- Complete set includes: Water pump, Sealed UV bulb, Control Box, Adaptor. UL listed. excellent for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.