Winterizing Plug For Aqualuminator Light criteo-exclude Pool Check Copper 3in1 is

Pool Check Copper 3in1 is the world's first test strip designed to measure Copper sanitizer levels used in alternative sanitizing systems (for both liquid and granule copper sulfate pentahydrate and ionizing systems)

The W3H250FDN is backed by a 3-year limited manufacturer’s warranty

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Winterizing Plug For Aqualuminator Light criteo-exclude Pool Check Copper 3in1 isThis is a special sized expandable plug that is used for the Pentair Aqualuminator Aboveground pool light. Specially made for a perfect fit, this expansion plug fits the Aqualuminator Light. Also fits the Darkbuster and Quasar above ground lights. This Aqualuminator plug will eliminate water loss through the wall light fitting during winter season. Easily remove the bulb from the housing and insert this expansion plug.