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Proper installation ensures immediate improvement in hose behavior and cleaner movement
original hand nuts can crack
reduced filtration efficiency
Unlike thin
GLB Calcium Hardness Up 25 lb – Pool Hardness Increaser OEM Filter Set Proper installation ensures immediate improvementLOCAL DELIVERY OR IN STORE PICKUP ONLY GLB Calcium Hardness Up (25 lb) is a professional grade calcium increaser designed to raise calcium hardness levels in swimming pools. Proper calcium hardness is essential for protecting pool surfaces and equipment while maintaining balanced water chemistry. This fast dissolving formula allows for controlled calcium adjustment without clouding water when used as directed. Low calcium hardness can cause aggressive
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