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Reduces water changes.Fast and easy installation.All GKM products are manufactured in an EPA Registered Establishment.Helps keep your aquarium water crystal clear.

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Helps keep your aquarium water crystal clear.Reduces water changes.Fast and easy installation.All GKM products are manufactured in an EPA Registered Establishment.

Reduces water changes.Fast and easy installation.

Compact ultraviolet sterilizer with revolutionary "Turbo-Twist" design.Easy-to-install UV sterilizers help keep aquarium water crystal clear.Versatile UV sterilizer can be installed in-line or hang-on-tank.

For use with the Hagen Marina Betta Kit.Use as a nightlight or unique decorative accent.Fully submersible.Safe low wattage system at only 6 volts.

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Inlet and outlet fittings can be rotated 360.Unique spiral design for more efficient use of UV radiation.Quartz material allows maximum UV transmission.

Directs water back and forth across UV light.Durable, built-to-last unit keeps bulb, electrical connection, and ballast dry.Increases oxygen level.All parts are replaceable.

Gasket seals quartz sleeve to cap.Quartz material allows maximum UV transmission.

Replacement bulb: For use in our Pond Green Free UV Clarifier to control heavy algae blooms in ponds and water gardens and keep water clean and green-free..Ultraviolet lightannual maintenance: Replace bulb every pond season for continued algae control..High-efficiency: For up to 11 months of continuous operation..4 available sizes: 5 watts for ponds up to 660 gallons; 9 watts for up to 1,800 gallons; 18 watts for up to 4,400 gallons; and 36 watts for up to 8,800 gallons..Reflective surface:Includes reflective stainless-steel insert that increases UV exposure.

Uv clarifying light: Ultra violet clarifier controls heavy algae blooms in ponds and water gardens and keeps water clean and green-free..High-efficiency uv bulb: Includes UV bulb for up to 11 months of continuous operation..Reflective surface: Includes reflective stainless-steel insert that increases UV exposure..Limited warranty: This UL Listed product features a 3-year limited warranty - see packaging for full details..4 available sizes: For ponds up to 660 gallons, up to 1,800 gallons, up to 4,400 gallons and up to 8,800 gallons..

Fully submersible unit's vortex flow design exposes water longer to ultraviolet light. Suitable for small ponds up to 1,500 gallons using pumps up to 700GPH.One glowing monitor halo ring and comes complete with 9,000 hour, long life 10 watt lamp and water tight quartz sleeve.Includes transformer and 18' grounded power cord.3/4" barbed fitting for inlet and outlet and 1 year limited warranty.

Increases oxygen level.All parts are replaceable.

Replacement 9 Watt UV bulb for AA's 9 Watt Green Killing Machine.Quick replacement with no tools.Maintains high UV efficiency in your aquarium.All GKM products are manufactured in an EPA Registered Establishment.

Replacement bulb: For use in our Pond Green Free UV Clarifier to control heavy algae blooms in ponds and water gardens and keep water clean and green-free..Ultraviolet light: Exposure to UV light in clarifier destroys reproductive ability of single-celled algae..Annual maintenance: Replace bulb every pond season for continued algae control..High-efficiency: For up to 11 months of continuous operation..Size: 35 watts for ponds up to 8,800 gallons..

Two glowing monitor halo rings and comes complete with 9,000 hour, long life 20 watt lamp and water tight quartz sleeve.Fully submersible unit's vortex flow design exposes water longer to ultraviolet light. Suitable for medium ponds up to 3,000 gallons using pumps up to 1,800GPH.Includes transformer and 18' grounded power cord.1" barbed fitting for inlet and outlet and 1 year limited warranty.

Aquarium UV Clarifiers

Green Killing Machine with Power Head

Green Killing Machine with Power Head 24W

Coralife BioCube Mini UltraViolet Sterilizer

Coralife Turbo-Twist UV Sterilizer

Hagen Marina Betta Kit LED Light

Lifegard Aquatics QL UV Water Sterilizer, 15 Watts

Lifegard Aquatics AquaStep Pro UV Sterilizer, 15 Watt

Lifegard Aquatics QL UV Water Sterilizer, 25 Watts

TetraPond 5W UV Pond Water Clarifier Replacement Bulb

Tetra Pond GreenFree UV Pond Water Clarifier

Pondmaster 10 Watt Clarifier

Lifegard Aquatics AquaStep Pro UV Sterilizer, 25 Watt

Green Killing Machine 9W Replacement UV Bulb

TetraPond 36W UV Pond Water Clarifier Replacement Bulb

TetraPond 18W UV Pond Water Clarifier Replacement Bulb

TetraPond 9W UV Pond Water Clarifier Replacement Bulb

Pondmaster 20 Watt Clarifier