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💦 Elevate your spa game—because your hot tub deserves the best soak!
This 32 oz liquid Calcium Increaser precisely boosts spa water hardness to the ideal 80–200 ppm range, protecting your hot tub’s equipment and enhancing water clarity. Compatible with all major sanitizer systems, it reduces foam and cloudiness while simplifying maintenance with easy dosing. Keep your spa sparkling and your investment lasting season after season.
L**O
Good value, great quality
Seems to help my other chems work more efficiently. I tried another brand but had to use way more to get to the same levels. Leads me to believe that there are clear quality and concentration differences among the various companies that sell this stuff. I highly recommend it.
M**E
Great quality and value
Hot Tub Things products are great. They cost less than most retail store options and are excellent quality. They keep my hot tub clean and safe!
M**W
Hot tub calcium
Use this in our hot tub. Great product great service.
T**S
Another piece of the puzzle
Good water in the tub absolutely necessary.
D**S
Good product
Works as described.
K**C
Quality Product !
Works great
A**R
Received unsealed.
I received this with the seal open. Obviously I’m skeptical this is actually the product I purchased. Sketchy.
T**A
Five Stars
works as it should
Trustpilot
2 months ago
1 day ago