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Fast-dissolving granules for quick chlorine boosts
Flow Adjustment Valve- Sort out the correct flow rate for different filtration systems which improves the cleaners compatibility and functionality
Test strips accurately measure chemical levels
Reduces pH levels in pools and hot tubs
Slow-release tablets last 3-5 days
Bestway Pool Filter Cartridge (Size 4) badge_New Fast-dissolving granules for quick chlorineThe Filter Cartridge (Size 4, type B) by Bestway is designed for 9,463L (2,500gal) per hour filter pumps; helping to keep your pool in optimum working condition Easy to clean and simple to use; these pool filter cartridges take no time to at all to rinse out Keep pool water clean and healthy and prevent the build up of grime and dirt with these swimming pool filter cartridges Filter out dirt and grime; replace the pool filter cartridge every 2 weeks
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