Eheim ReeflexUV+e 2000 WiFi UV Steriliser 24W (Model 3735)

The Eheim ReeflexUV+e 2000 is the flagship model in Eheim's premium WiFi UV steriliser range — the most powerful and most advanced UV steriliser Eheim produces. Designed for large freshwater and marine aquariums from 1200L up to 2000L, it quickly and effectively reduces or eliminates harmful bacteria, algae spores, fungi, viruses, and the infectious stages of fish parasites — delivering crystal-clear, biologically safer water at scale.

At the heart of the ReeflexUV+e is Eheim's patented reflector technology — a unique arrangement of the 24W UV-C light source and a specially designed internal reflector that ensures UV-C radiation penetrates the water from multiple sides simultaneously. Unlike conventional UV sterilisers that irradiate from one side only, the ReeflexUV+e delivers up to 1.8 times greater germicidal efficiency at the same wattage — with no complicated water deflection and no performance loss.

Fully integrated into the Eheim Digital ecosystem, the ReeflexUV+e 2000 can be paired with other Eheim Digital products for complete connected aquarium management. A dedicated booster mode allows you to intensify sterilisation output during heavy parasite outbreaks — giving you a powerful, targeted response when your fish need it most.

Key Features

• Integrated WiFi (WLAN): Full remote control via the free Eheim app — monitor and control steriliser operation from anywhere via smartphone, tablet, or PC/MAC
• Patented reflector technology: Internal reflector mirrors UV-C radiation for multi-directional irradiation — up to 1.8 times more effective than conventional UV sterilisers at the same wattage
• 24W UV-C lamp (2G11 4-pin): Delivers powerful germicidal output for large aquariums up to 2000 litres
• No performance loss: Water flows directly past the UV-C burner without detours — full UV exposure with no flow restriction
• Booster mode: Intensify UV-C output via the Eheim app during heavy parasite outbreaks for a fast, targeted sterilisation response
• Scheduling and timer control: Set custom operation times and pauses via the app for optimised daily sterilisation cycles
• Reduces and eliminates: Free-floating bacteria, fungi, viruses, algae spores, and infectious swarmers of fish parasites in freshwater and marine water
• Eheim Digital compatible: Pairs wirelessly with the Eheim Digital family including Professionel 5e filters and LEDcontrol+ for fully integrated smart aquarium management
• AUTO-OFF safety system: Automatically switches off when the unit is opened — UV-C radiation is completely contained during maintenance
• Flexible installation: No defined installation position or flow direction — mounts vertically or horizontally
• Mounting bracket included: For easy attachment to aquarium cabinet or tank side
• Dual hose connections: Compatible with both 12/16mm and 16/22mm hose for flexible plumbing
• Freshwater and marine compatible: Suitable for all aquarium water types
• 3-year warranty: Backed by Eheim's industry-leading guarantee
• Made in Germany: Eheim's trademark build quality, materials, and reliability

Compatibility

• Suitable for: Freshwater and marine aquariums from 1200L to 2000L
• Flow rate: 1500 l/h (sterilisation) / 3000 l/h (clarification)
• Hose connections: 12/16mm and 16/22mm
• UV-C lamp: 24W — 2G11 socket (replacement lamp part number 4114010)
• WiFi connectivity: 2.4GHz WLAN — compatible with iOS and Android via Eheim app
• Power: 24W / 230V

Product Details

• Brand: Eheim
• Model: ReeflexUV+e 2000
• Model Number: 3735
• Type: WiFi UV Steriliser / UV Clarifier
• UV-C Lamp: 24W — 2G11 (part number 4114010)
• Aquarium Size: 1200L – 2000L
• Flow Rate: 1500 l/h (sterilisation) / 3000 l/h (clarification)
• Hose Connection: 12/16mm and 16/22mm
• Dimensions (W x D x H): 130 x 115 x 560mm
• WiFi: 2.4GHz WLAN — iOS and Android
• Warranty: 3 years
• Made in: Germany
• Suitable For: Freshwater and marine aquariums

The Eheim ReeflexUV+e 2000 is ideal for advanced aquarium keepers, professional reefers, and anyone managing very large freshwater or marine systems who demands the highest performing, WiFi-controlled UV sterilisation available — with booster mode capability and full integration into the Eheim Digital ecosystem.