Hot Tub Things Calcium Increaser, Liquid Spa Water Hardness Booster for Hot Tub & Spa, Supports Equipment Longevity, Enhances Water Balance, Reduces Foam, Salt System Compatible, 32 oz
Hot Tub Things Calcium Increaser, Liquid Spa Water Hardness Booster for Hot Tub & Spa, Supports Equipment Longevity, Enhances Water Balance, Reduces Foam, Salt System Compatible, 32 oz
Couldn't load pickup availability
- 24/7 Customer Support
- Risk-Free 30-Day Returns
- Fast & Reliable U.S. Shipping
Contact Information
Contact Information
30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
✔ Easy return process
✔ Fast refunds
✔ No hidden conditions
Fast U.S. Shipping
Fast U.S. Shipping
We ship within the United States only — no international delays.
✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
✔ Real-time tracking available
👉 Track your order anytime from the header via Track Order
About This
- MAINTAINS OPTIMAL CALCIUM HARDNESS: – Boosts calcium hardness in hot tub and spa water to ideal 80–200 ppm range. This calcium hardness increaser for hot tub helps protect surfaces, jets, and heaters while improving sanitizer efficiency and water clarity.
- ENHANCES EQUIPMENT DURABILITY & FUNCTION: Soft or low-calcium water can shorten spa equipment life. Our liquid calcium hardness increaser helps maintain proper mineral levels to support heaters, pumps, jets, and metallic parts in hot tubs and saltwater spas.
- REDUCES FOAM AND CLOUDINESS: – High water hardness supports cleaner, clearer spa water. This spa calcium hardness increaser helps reduce sanitizer demand, prevents hazy water, and works with chlorine, bromine, and mineral-based spa care systems.
- EASY DOSING & MAINTENANCE: – With pump running, add 1 fl oz per 500 gallons to raise calcium hardness about 10 ppm. Wait 2 hours and retest, repeating at half dose if needed. Use weekly or after draining to maintain optimal spa water hardness balance.
- RELIABLE SPA FORMULA & SYSTEM COMPATIBLE: – Designed specifically for spas and hot tubs, this calcium hardness increaser works seamlessly with chlorine, bromine, saltwater, and mineral sanitizer systems. Made without fillers for clean, effective water hardness control.
Overview
- Brand : Hot Tub Things
- Item Weight : 2.1 Pounds
- Item Form : Liquid
- Product Benefits : Protects hot tub from corrosion caused by low calcium
- UPC : 850511004222
Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.
👉 Softer skin and smoother hair with every shower.
👉 Prevent scale buildup and keep your appliances running efficiently.
👉 Softer, brighter clothes that last longer with every wash.
See the Difference in Your Water — Instantly
Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.
Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.
Feel the difference in every drop — from your kitchen to your shower.
FAQ
Water Filtration & Home Water Guide
-
Reverse Osmosis vs Water Filter — Which Is Better?
Not sure if you need Reverse Osmosis or a standard water filter? Learn the real differences, what each system removes, and how to choose the best option for your home.
Reverse Osmosis vs Water Filter — Which Is Better?
Not sure if you need Reverse Osmosis or a standard water filter? Learn the real differences, what each system removes, and how to choose the best option for your home.
-
Do I Really Need a Water Filter at Home?
Wondering if your home needs a water filter? Learn how to check your water quality, compare filter types, and choose the right system for safer, better-tasting water.
Do I Really Need a Water Filter at Home?
Wondering if your home needs a water filter? Learn how to check your water quality, compare filter types, and choose the right system for safer, better-tasting water.
-
7 Signs You Have Hard Water in Your Home
Water quality plays an important role in everyday life. From drinking water to showering and washing dishes, the type of water flowing through your home affects comfort, cleanliness, and even...
7 Signs You Have Hard Water in Your Home
Water quality plays an important role in everyday life. From drinking water to showering and washing dishes, the type of water flowing through your home affects comfort, cleanliness, and even...
