Coralife BioCube UV Sterilizer for Aquariums Treats and Bones The replaceable CR2032 battery lasts

The replaceable CR2032 battery lasts up to 1 year

To access the Iridium network and communicate with your inReach SE+ or Explorer+ device

They won't respond to the ultrasonic sound

cupric sulfate

Coralife BioCube UV Sterilizer for Aquariums Treats and Bones The replaceable CR2032 battery lastsThis BioCube UV upgrade kills free floating green water algae, parasites and harmful bacteria. The sterilizer attaches directly to the built in BioCube pump for easy setup and use (if used with a different pump the flow rate should not exceed 300 gph). Features: Compatible with all Coralife and Oceanic BioCubes Low Voltage ballast and 5 watt bulb ideal for small aquariums This UV should only be used submersed. Do not use as an external UV sterilizer.