
EZ SPA EZ3 Care Kit
Product Overview
A proven choice for spa owners who want to eliminate the complexity of balancing multiple individual chemicals every week.
The EZ SPA EZ3 Care Kit from API provides a structured three-part system designed for 500–700-gallon spas. It includes a high-concentration Sodium Dichlor sanitizer (99%), a non-chlorine oxidizer and clarifier blend, and a water conditioner that manages scale and foam. In our experience, this kit reliably handles water clarity and sanitation without the aggressive pH swings common with generic spa chemicals.
Benefits & What Makes It Different
Multi-Sanitizer Compatibility
This kit is formulated to work alongside chlorine, bromine, salt, or mineral systems, providing flexibility for various spa setups.
Integrated Scale Inhibition
The included conditioner helps prevent calcium scale buildup on heaters and jets, which is a standard specification for protecting expensive spa components.
Pre-Measured Dosing
Designed specifically for standard 500–700-gallon spas, these components remove the guesswork and help maintain a consistent 3-5 ppm sanitizer level.
Product Details
Sodium Dichloro-s-triazinetrione dihydrate 99% (Boost), Potassium Peroxymonosulfate (EZ SPA)
10 oz per 10,000 gallons (scaled from 1/2 oz per 500 gallons) for the sanitizer component.
Compatibility
- Compatible with chlorine and bromine systems
- Safe for all spa surfaces including acrylic and vinyl
- Do not mix dry chemicals together before adding to water
When To Use This
Pro Tip
In hard water areas like the Southwest, the scale inhibitor in this kit is particularly useful; however, always check your calcium hardness levels first, as extremely high levels may require an additional sequestering agent.
Common Questions & Instructions
Can I use the EZ SPA EZ3 Care Kit with a bromine-based spa system?
Yes, the EZ3 system is fully compatible with bromine. While the kit includes a Dichlor-based boost, the clarifier and conditioner components will not interfere with your bromine bank or existing sanitation levels.
How often should I add the components in the EZ3 Care Kit?
For most residential spas, the sanitizer should be checked daily or after each use, while the clarifier and conditioner are typically added once per week to maintain water feel and clarity in 500–700-gallon volumes.
Does this kit affect the pH or Total Alkalinity of my spa water?
The formulas are pH-balanced to minimize impact on your water chemistry. However, we recommend testing weekly as heavy bather loads can naturally depress alkalinity over time.



