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SpaGuard Spa Calcium Hardness Increaser is a granular formula designed to precisely boost calcium levels by 25 ppm per tablespoon per 100 gallons, maintaining the optimal 200-400 ppm range. This prevents corrosion and etching of spa equipment and surfaces, extending their lifespan. Compatible with all major sanitizers, it ensures balanced, clear water without scale buildup. Trusted by thousands, SpaGuard delivers professional-grade spa protection in a convenient 12 oz package.
| ASIN | B007ZUD2IU |
| Best Sellers Rank | #1,648 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #13 in Swimming Pool Balancers |
| Brand | SpaGuard |
| Brand Name | SpaGuard |
| Customer Reviews | 4.7 out of 5 stars 3,831 Reviews |
| Item Form | Powder |
| Item Weight | 12 Ounces |
| Manufacturer | SpaGuard |
| Manufacturer Part Number | 42257BIO |
| Manufacturer Warranty Description | Returns are not accepted on opened or used items and are subject to a 20% restocking fee. |
| Model Number | BIO42257 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Benefits | Prevents Corrosion |
| UPC | 017541612326 017541646123 |
| Unit Count | 12.0 Ounce |
E**S
Good product
Good price and product works well !
M**P
Great product
This chemical line works great in my hot tub
W**D
Works great
Works great
J**K
Easy to add.
Easy to add and calculate based on the hardness scale on the bottle.
A**R
Great Value
same as i would pay in spa house, but 8 dollars cheaper.
G**G
Hard water, or not hard. That is the question. The answer?
Chlorine, bromine pH, and hardness. My spa has given me a science refresher, that showed me I wasn’t sure I actually learned that science to begin with. And, since pool service providers only care for spas if you have a pool, I have no pool service. Anyway, a couple of carefully worded questions to AI led me to what I needed, and the test strips are happy! The water is clear, the chemicals dissolved with out issue or smell. Five stars
C**Y
Review
Good prod
M**D
Works as advertised
Works as it should. Would buy this again.
Trustpilot
4 days ago
1 month ago