The Piano Life Saver Universal Watering Can The Universal Watering can is designed to add the exact amount of water and Pad Treatment to the Piano Life Saver System that is needed when the yellow WATER light starts blinking. INSTRUCTIONS: Fill the can with water to the red line and add one capful of Pad Treatment. Insert the nozzle into the end of the watering tube and tilt the can forward slowly until the nozzle is pointing straight down. Hold in that position until you hear a gurgling sound indicating the can is empty. Lower the watering can and place it on the floor for a few seconds to allow any water that is still in the watering tube to run back into the can. Remove the nozzle from the watering tube and reclip to the piano. Choose this Universal Watering Can for systems manufactured in 2004 or later. For use with a watering tube measuring 3/8" inside diameter and 1/2" outside diameter. Choose the Pre-Universal Watering Can with adapter for systems manufactured prior to 2004.