Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
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Description
Spa Guard Spa Calcium Hardness Increaser 12ozSpaGuard Calcium Hardness Increaser 12 oz Low levels of calcium assist in spa surface and equipment deterioration, SpaGuard Calcium Hardness Increaser raises calcium levels to the recommended range of calcium in the water 200 1,000 ppm. SpaGuard's Calcium Hardness Increaser enables spa owners to increase their calcium hardness with this easy to use granular formula, which will boost your calcium hardness to above the danger zone, where low levels
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.9 ★★★★★
Based on 752 reviews
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Product Reviews
★★★★★ 5
Celebration of Life
Color: Black, Style: 1 Pack
I bought this to put on the memory table for a Celebration of Life service to hold 100 jet black ball point pens with FOREVER IN OUR HEARTS printed in white, the pens being for attendees to keep after they signed the guest book with them. This box was perfect.
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Reviewed in the United States on May 25, 2026
★★★★★ 3
It’s pricey
Color: Black, Style: 1 Pack
Ridiculous price for a plastic tray but it was the right size for my center console in my SUV.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Great quality
Color: Beige
Love it’s perfect for my keys
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Jewelry drop
Color: Black
It's very impressive for the price a nice jewelry to put jewelry and keys ect. I'd recommend this purchase to other people.
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Small touch, Big in Style
Color: Gray
Perfect size for a cup of tea/coffee or a glass of wine on the side
Also great for placing a piece of jewelry or anything else you want close by your bedside
I like the oval shape better than a rectangle one and the quality of material is top notch, not to speak of how strong it is…a really good buy for us!
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Reviewed in the United States on October 18, 2025
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