Premium Waterbed Conditioner By Aqua Fusion In 4oz clear bottles Premium Waterbed Conditioner is Very easy to use. Just open and pour into your waterbed mattress. Made in the USA for over 35 years. Works with free flow, semi wave and waveless water mattresses For California King, Queen, Double, Super single & Twin Softside and Hardside Waterbed Mattresses Most waterbed mattress manufactures want you to add 4 oz every six months or 8 oz every 8-12 months