Achieve clearer aquarium water while reducing free-floating microorganisms with the EHEIM reeflexUV UV Sterilizer. Designed for freshwater and saltwater aquariums, the reeflexUV combines an efficient direct-flow design with an internal high-gloss aluminum reflector to maximize UV-C exposure.

Unlike conventional UV sterilizers that redirect water through complicated pathways, the EHEIM reeflexUV allows water to flow directly around the UV-C lamp. This helps minimize performance loss while exposing the passing water to UV-C light from multiple sides.

The reeflexUV installs inline with a compatible aquarium filter or circulation pump. Multiple models are available for aquariums ranging from approximately 21 to 528 gallons.

Available Models

EHEIM reeflexUV 350 – 7 Watt

• Recommended for aquariums from approximately 21 to 92 gallons
• Maximum microorganism-reduction flow: 200 LPH, approximately 53 GPH
• Maximum water-clarification flow: 400 LPH, approximately 106 GPH
• Standard Shipping profile

EHEIM reeflexUV 800 – 11 Watt

• Recommended for aquariums from approximately 106 to 211 gallons
• Maximum microorganism-reduction flow: 600 LPH, approximately 159 GPH
• Maximum water-clarification flow: 1,200 LPH, approximately 317 GPH
• Medium Shipping profile: $18.99

EHEIM reeflexUV 1500 – 18 Watt

• Recommended for aquariums from approximately 185 to 396 gallons
• Maximum microorganism-reduction flow: 1,000 LPH, approximately 264 GPH
• Maximum water-clarification flow: 2,000 LPH, approximately 528 GPH
• Medium Shipping profile: $18.99

EHEIM reeflexUV 2000 – 24 Watt

• Recommended for aquariums from approximately 317 to 528 gallons
• Maximum microorganism-reduction flow: 1,500 LPH, approximately 396 GPH
• Maximum water-clarification flow: 3,000 LPH, approximately 793 GPH
• Medium Shipping profile: $18.99

Key Features

• Helps reduce free-floating harmful bacteria and microorganisms
• Helps reduce fish parasites during their free-swimming infectious stages
• Controls water cloudiness caused by floating algae or bacteria
• High-gloss aluminum reflector increases UV-C exposure
• Direct water path minimizes performance loss
• Up to 1.8 times more effective than conventional UV sterilizer designs
• Strong performance with low energy consumption
• AUTO-OFF safety system switches the unit off when opened
• Flexible installation with no required mounting position or flow direction
• Included mounting bracket allows for secure installation
• Treats organisms suspended in the water without disturbing established beneficial bacteria in the filter or substrate
• Suitable for freshwater and saltwater aquariums
• Non-WiFi design provides simple, dependable operation
• Three-year EHEIM manufacturer warranty

What’s Included

• EHEIM reeflexUV UV Sterilizer
• Model-specific UV-C lamp
• Mounting bracket and hardware
• Ballast with power cable
• Two 12/16 mm hose connection fittings
• Two 16/22 mm hose connection fittings

Important Installation Information

The EHEIM reeflexUV is an inline UV sterilizer and does not include a circulation pump. It must be connected to a compatible canister filter, return pump, or dedicated circulation pump.

UV performance depends on the rate at which water passes through the sterilizer. Use the lower recommended flow rate when targeting free-floating microorganisms and infectious parasite stages. The higher flow rate may be used when the primary goal is controlling green water or bacterial cloudiness.

A UV sterilizer is a supplemental aquarium-management tool. It only treats organisms suspended in the water as they pass through the unit. It does not eliminate parasites or organisms already attached to fish, rocks, substrate, or aquarium surfaces.

Why Shop With Us?

Infinity and Beyond Aquatics provides dependable aquarium equipment from trusted manufacturers for freshwater, saltwater, and reef systems.

• Carefully selected products from trusted aquarium brands
• Knowledgeable freshwater and saltwater aquarium support
• Secure online checkout
• Fast order processing
• Support before and after your purchase

Shipping Information

Shipping rates are based on the model selected.

The EHEIM reeflexUV 350 ships using our Standard Shipping profile. It qualifies for FREE standard shipping because its purchase price exceeds our $100 free-shipping threshold.

Due to their larger packaged dimensions, the EHEIM reeflexUV 800, 1500, and 2000 ship using our Medium Shipping profile for a flat rate of $18.99.

The applicable shipping rate will be shown at checkout after selecting your model.

Orders are typically processed within 1–3 business days. Standard deliveries generally arrive within 3–7 business days, while Medium Shipping deliveries generally arrive within 5–8 business days after shipment. Tracking information will be emailed as soon as your order ships.

Delivery times are estimates and may vary due to carrier delays, weather, product availability, or manufacturer processing times.