Silk Balance Gems™ (16 Count) Water Conditioner for Hot Tubs Caldera Filter The Serene (Bromine) cartridge is

The Serene (Bromine) cartridge is the active sanitizer in this system

oz of Sirona™ Calcium Booster will raise the calcium hardness 7ppm in 500 gallons of water

2008-2012 Burlington 680 Series models

Center Hole Diameter: about 2"

You can find the pillow that fits the Limelight Collection 2018+ here

Silk Balance Gems™ (16 Count) Water Conditioner for Hot Tubs Caldera Filter The Serene (Bromine) cartridge isCLEARANCE ~ only 6 left as of 2 7 26 ~ CLEARANCE Silk Balance Gems are the once per week solution uniquely formulated for spa water. The soothing ingredients in the product hydrate your skin without harsh chemicals or long term effects! Perfect for those with skin problems! Now Available in a new dissoluble gem (pod) form! Simply toss and go once a week for crystal, clear water that makes your skin feel soft, balances pH and Alkalinity and neutralizes