Leisure Time Spa Replenish Shock, 2 lb Bottle | LT45310A PG1903 If the required height differential

If the required height differential exceeds a single collar's depth

Volute Replacement for Polaris PB4-60

The Sapphire Stuff also increases filter efficiency

No need for any dispensers or floaters

The only North American manufacturer of DPD tablets

Leisure Time Spa Replenish Shock, 2 lb Bottle | LT45310A PG1903 If the required height differentialLeisure Time Replenish 2 lb Bottle Leisure Time Replenish is a multi functional quick dissolving shock and oxidizer treatment. Leisure Time Replenish combines the power of MPS with chlorine. Built in pH buffers and clarifiers help keep spa water soothing and clear. Multi Function Oxidizer to Shock and Clarify Clears up cloudy water Quick dissolving & Fast acting! Ideal for spas with mineral systems Features and Benefits: Compatible with chlorine,