Sirona Calcium Booster
Product Overview
What spa technicians reach for when soft fill water causes equipment corrosion and persistent water foaming.
In our experience, soft water in a hot tub quickly leads to foaming and etched heater elements. This fast-dissolving liquid formula from Sirona comes in a convenient 1 LB container designed to reliably raise calcium hardness into the ideal 200 to 400 ppm range without clouding. It works seamlessly alongside bromine, chlorine, mineral, and biguanide sanitizing systems.
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Benefits & What Makes It Different
Targeted Hardness Range
Elevates and maintains spa calcium levels within the ideal 200 to 400 ppm window to prevent soft-water foam.
Universal Sanitizer Compatibility
Formulated for hot tubs running bromine, chlorine, salt water, ozone, or biguanide without causing precipitation.
Liquid Pre-Dissolved 1 LB Formula
Eliminates undissolved granules at the spa floor, protecting acrylic surfaces and pumps immediately.
Product Details
Calcium Chloride
Refer to bottle dosage chart to maintain 200–400 ppm; run jets on high for 15 minutes after application
Compatibility
- Compatible with chlorine, bromine, salt water, biguanide, ozone, and mineral systems
- Do not pre-mix directly with concentrated pH adjusters or alkalinity increasers
When To Use This
Pro Tip
If you fill your spa using a whole-home water softener or naturally soft municipal water, always test and adjust calcium hardness up to 200–400 ppm before balancing pH or adding sanitizers.
Common Questions & Instructions
How do I know if my spa water needs Sirona Calcium Booster?
Test your water weekly with reliable test strips or a test kit. If your calcium hardness falls below the target range of 200–400 ppm, add this liquid booster to stop foaming and prevent soft water from corroding internal metal heaters and pump seals.
Is Sirona Calcium Booster compatible with bromine spas?
Yes, Sirona Calcium Booster is fully compatible with bromine, chlorine, ozone, biguanide, and mineral purification systems. It will not interfere with sanitizer oxidation or disrupt your pH balance when dosed according to label instructions.
How long should I run the spa jets after adding this 1 LB treatment?
After adding the measured dosage from your 1 LB bottle, run the spa circulation pumps on high speed for at least 15 minutes to ensure thorough dispersal throughout the plumbing.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
