{"product_id":"green-killing-machine-9w-uv-sterilizer-aqua-fit","title":"Green Killing Machine 9W - 50 Gal Internal UV Sterilizer Zigzag Flow Fresh \u0026 Saltwater - Aqua-Fit","description":"\u003cp\u003eThe Aqua-Fit by AA Aquarium Green Killing Machine (GKM) 9W is a submersible internal UV-C sterilizer for freshwater and saltwater aquariums up to 50 gallons (200 liters). All-in-one system with integrated 50 GPH pump, sealed UV bulb, control box, and adapter — 5-minute installation with no tools or plumbing required.\u003c\/p\u003e\n\u003ch2\u003eGreen Killing Machine 9W Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e9-watt 254nm UV-C radiation: eliminates suspended algae, bacteria, yeasts, molds, and pathogens\u003c\/li\u003e\n\u003cli\u003ePatented Zigzag Flow design inside the housing to maximize UV light exposure time\u003c\/li\u003e\n\u003cli\u003eIntegrated 50 GPH pump with reduced flow inside the bulb (37 GPH) for effective sterilization\u003c\/li\u003e\n\u003cli\u003eHelps combat cyanobacteria, dinoflagellates, ich, and velvet in both fresh and saltwater\u003c\/li\u003e\n\u003cli\u003eChildSafe 12V DC power supply — safe for fish, plants, and invertebrates\u003c\/li\u003e\n\u003cli\u003eLED indicator on the control box signals when to replace the UV bulb\u003c\/li\u003e\n\u003cli\u003eUL and cUL certified — the only Underwriters Laboratories certified internal UV sterilizer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation and Use\u003c\/h2\u003e\n\u003cp\u003eThe GKM 9W attaches inside the aquarium with suction cups and can be positioned vertically, horizontally, or in a filtration sump. Assembled dimensions: 4\" x 4\" x 12\". The control box must remain outside the aquarium. For optimal results, run 24\/7 for the first 2 weeks, then connect to a timer (8 hours per day) to extend bulb life. Do not use simultaneously with medications — UV neutralizes chemical treatments.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUV-C Power: 9 watts at 254 nm\u003c\/li\u003e\n\u003cli\u003ePower Supply: 12V DC\u003c\/li\u003e\n\u003cli\u003ePump Flow Rate: 50 GPH (flow rate inside the bulb: 37 GPH)\u003c\/li\u003e\n\u003cli\u003eCapacity: aquariums up to 50 gallons (200 liters)\u003c\/li\u003e\n\u003cli\u003eCompatibility: freshwater and saltwater\u003c\/li\u003e\n\u003cli\u003eAssembled Dimensions: 4\" x 4\" x 12\"\u003c\/li\u003e\n\u003cli\u003eDouble Pin Connector\u003c\/li\u003e\n\u003cli\u003eBulb Lifespan: 6 to 9 months (continuous use)\u003c\/li\u003e\n\u003cli\u003eIncluded: 50 GPH submersible pump, sealed UV bulb, control box, DC adapter, filter sponge, suction cups\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 year against defects in materials and workmanship (UV-C bulb excluded)\u003c\/li\u003e\n\u003cli\u003eCertifications: UL, cUL — EPA Est. #093568\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAvailable Sizes — Green Killing Machine\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMini GKM 3W — aquariums up to 20 gal (80 L)\u003c\/li\u003e\n\u003cli\u003eGKM 9W — aquariums up to 50 gal (200 L)\u003c\/li\u003e\n\u003cli\u003eGKM 24W — aquariums up to 120 gal (450 L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this product from ReefSolution\u003c\/h2\u003e\n\u003cp\u003eThe Green Killing Machine 9W is the most popular model in the range — ideal for medium-sized aquariums. Complement your system with the Green Killing Machine Mini 3W for a nano-aquarium, the Green Killing Machine 24W for aquariums over 50 gallons, a Seachem Purigen for organic chemical filtration, or a Seachem Clarity to quickly eliminate turbidity.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan the Green Killing Machine 9W be installed in a sump?\u003c\/h3\u003e\n\u003cp\u003eYes, the GKM 9W can be placed vertically, horizontally, or directly in a filtration sump. Ideal for reef systems where the aesthetics of the main aquarium are important.\u003c\/p\u003e\n\u003ch3\u003eWhat is the actual flow rate of the Green Killing Machine 9W for UV sterilization?\u003c\/h3\u003e\n\u003cp\u003eThe pump delivers 50 GPH, but the Zigzag Flow design reduces the flow to 37 GPH inside the bulb to maximize UV-C contact time and ensure effective sterilization.\u003c\/p\u003e\n\u003ch3\u003eIs the Green Killing Machine 9W sufficient for a 55-gallon aquarium?\u003c\/h3\u003e\n\u003cp\u003eThe GKM 9W is designed for aquariums up to 50 gallons. For a 55-gallon tank, it can work but the treatment will be slower. For optimal efficiency on aquariums over 50 gallons, consider the GKM 24W.\u003c\/p\u003e","brand":"Aqua-Fit","offers":[{"title":"Default Title","offer_id":46336522485931,"sku":"AA6670","price":108.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/639086368314355303AA6670.jpg?v=1774027503","url":"https:\/\/reefsolution.com\/en\/products\/green-killing-machine-9w-uv-sterilizer-aqua-fit","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}