WEDECO/Ideal Horizons - LBRE-4 UV Light Bulb for Germicidal Water Treatment MC-2A then you need to either

then you need to either slow down the rate at which you disinfect or place the substrate closer to the mountable unit

Aluminum Reflector Set for Oce Arizona 360 GT 3010111639 UV Curing Lamp Bulb

CureUV’s Sunlight - LP4010 UV Light Bulb For Germicidal Water Treatment gives you a comprehensive

This device is a compact

The lamp bulb has a total output of 325 WPI and an overall length of 16

WEDECO/Ideal Horizons - LBRE-4 UV Light Bulb for Germicidal Water Treatment MC-2A then you need to eitherGuaranteed Replacement Ultraviolet (UV) Bulb 4 Pin 14 Watts 11. 3 Inch Length Lamp Worry Free Performance for 1 Year The Wedeco Ideal Horizons LBRE 4 Replacement UVC Light Bulb is a four pin on single end light bulb with a total length of 11. 3" and an arc length of 8. 86". The UVC lamp bulb has a peak output of 253. 7nm that can destroy the microorganisms' DNA in water and render them harmless. These specialized UVC lamps and bulbs from CureUV