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Love these in my hot tub—- gives me one month free of maintenance
My Marquis spa came with an installed system utilizing Frog cartridges. The mineral cartridge introduces silver into the water which provides for antibacterial protection. Silver was first used for this purpose by the Romans successfully as they would drop silver coins into their pool water. Old technology + modern tech = perfect Spa water !!
Been buying products from poolgeek for many years. Always in stock, great prices and fast delivery.
Quick, efficient, good buy
Prompt delivery of my favorite spa supplies
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