Factory lamp kit for the Aqua Ultraviolet VIPER 400W UV sterilizer with the 2" plastic housing. Restores peak germicidal performance for large, high-flow systems using a single high-output, low-pressure (amalgam) UV-C lamp.
Genuine Aqua UV 400-watt HO UV-C lamp matched to 2" plastic VIPER units
OEM seals/hardware ensure correct fit, sealing, and stable UV dose
Service-friendly kit minimizes downtime on critical life-support loops
Ideal for aquaculture, big ponds, and commercial aquarium systems
For VIPER 400W sterilizers in the 2" plastic configuration
Not compatible with 2"/3" stainless or 3" plastic VIPER bodies, nor other wattages (800W/1200W)
Lamp Power: 400 W (low-pressure amalgam UV-C)
Peak Wavelength: ~254 nm (germicidal)
Housing Fit: 2" plastic VIPER chamber
Service Life: Replace about every 9–12 months of continuous use (or per UV meter/dose targets)
(1) 400W UV-C lamp — VIPER, 2" plastic fit
(1) Set of end seals/O-rings sized for the 2" plastic end assembly
(1) Set of required end hardware/insulator(s) (kit dependent)
Quick install sheet
Disconnect power and allow the unit to cool; isolate and depressurize plumbing.
Open end assembly; remove the old lamp and seals (avoid touching new lamp glass).
Inspect/clean the quartz sleeve; replace if cloudy, etched, or cracked.
Lightly lube new O-rings with silicone-safe grease; seat squarely.
Reassemble hand-tight, then snug—do not overtighten.
Restore flow, power ON, verify strike, and check for leaks after first run.
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