Natural Chemistry Spa Calcium Increaser
Best solution for hot tub owners needing to balance water hardness.
This granular treatment is the simplest way to stop corrosive water from eating away at your spa’s finish and internal components. It requires a bit of testing to dial in your levels, but it is the essential trade-off for keeping your water crystal clear and your equipment running for years.
$15.44
at
eBay
Who it's for
- Spa owners looking to prevent heater and jet corrosion
- Maintenance beginners wanting a quick and easy application process
- Pool owners seeking stable water chemistry and sanitizer efficiency
Who should skip it
- Budget-conscious shoppers looking for the lowest-priced generic chemicals
- Owners with naturally hard water prone to scale buildup
- Users wanting to avoid extra brushing or filtration steps
Performance breakdown
Solubility speed
Granular formula dissolves rapidly to prevent residue on spa surfaces.
Equipment protection
Effectively prevents corrosive water damage to heaters and internal plumbing.
Water clarity impact
Quickly clears up cloudiness caused by mineral imbalances in hot tubs.
Application ease
Simple dosing process makes routine water maintenance stress-free for owners.
Surface compatibility
Safe for use across vinyl, fiberglass, and gunite spa finishes.
Chemical stability
Reliable calcium chloride concentration ensures predictable adjustments to water hardness.
Key Specs
Weight
1.83 lbs
Chemical Form
Granular
Pool Type Compatibility
Spa
Recommended Calcium Hardness
150-250 ppm
Application Method
Manual
Application Frequency
As Needed
Know before you buy
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Ask Metto anything about the Natural Chemistry Spa Calcium Increaser before you decide.
