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Enjoy your pool all season long with the exceptional PoolRx Black/White Mineral Unit - 20-30K! Its specially treated alloy cylinder is filled with a powerful granular potion that quickly dissolves in water and provides 6 months of protection from algae. The minerals combat algae growth, allowing chlorine to do its job more effectively. What's even better? As these minerals flow through the pool, they are constantly refreshed and replenished for an uninterrupted supply of effective protection!
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