Aqua Ultraviolet Viper Series UV - 400 Watt - Plastic

Save $476.75
Aqua UltravioletSKU: AS90420

Size: 2" No Wiper 110V - Viper 400W Plastic UV (MPN AS90420)
Sale price$3,075.35 Regular price$3,552.10

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The Viper Series UVs are ideal for large commercial or residential ponds, aquariums, and water features. The specially designed 4-inch 400 Watt lamps disinfect faster and have greater cell penetration capability. The compact body design has a small footprint making it easy to handle, install and maintain. Vipers are engineered to accommodate extreme flow rates; minimum water flows must be maintained at 95 GPM. A flow switch, provided, shuts the unit off if flows fall below 95 GPM. Aqua Ultraviolet UVs will clear your water in 3 to 5 days sometimes overnight and keep it that way. Performance is guaranteed when sized, installed and operated according to our instructions.

Viper Series Fresh Water Sizing Chart

Viper Series Units Size Fresh Water Sterilizer Size Fresh Water Pond Clarifier Min Flow
Viper SL 400 Watt 14k-30k Gallons 50k Gallons 95 GPM
Viper SL 800 Watt 28-60k Gallons 100k Gallons 95 GPM
Viper SL 1200 Watt 43-90k Gallons 150k Gallons 95 GPM

A sterilizer will eliminate green water and control bacteria. The Viper 400 Watt, for instance, will sterilize up to 30,000 gallons of freshwater. However, when used as a Clarifier the Viper 400 Watt, will control green water in a freshwater environment of up to 50,000 gallons that has 50% to 75% plant coverage and partial shade.

View Aqua Ultraviolet Viper Series UV installation Instructions (PDF)

Small in Size Big on Performance:

  • Small Footprint
  • Easy to install and maintain
  • 4" 400 Watt lamp
  • Longest lamp life on the market, 14 months
  • Greater cell penetration
  • Highest quality hard quartz
  • Clear cap glow tells you your lamp is on
  • Includes Float Switch to protect unit should flow drop below 95 GPM


  • Inlet & Outlet Diameter: you have 4 Inlet/Outlet diameter options to choose from (2", 3", 4" and 6").
  • Power: Chose from either the 110V/60 Hz option OR the 22OV/60 Hz option
  • Wiper: Optional wiper for easy maintenance

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