MUJIMONO KOI

This is a simple way to install your  Amalgam Submersible UVC, drill a 48mm hole in the desired location, insert the male part of the connector from the outside with the provided rubber seal, and then thread the nut on from the inside. 

Then slide the Quartz tube through the outside connector with the O-ring provided by the UVC. Insert the bulb, plug in the connector, and tighten the locking nut. The connector for Amalgam Submersible UVC requires a 48mm hole.