3.5 M - Adhesive Depth Marker - 10 Inch x 6 Inch with 4 Inch Lettering discharge-pipe-size_12" Spectrum stanchion posts have a

Spectrum stanchion posts have a 2 inch top ring for connecting the lines

Measure the current pool water alkalinity using a standard test kit

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This Spa Closed With Graphic Sign measures 12 x 18 inches

3.5 M - Adhesive Depth Marker - 10 Inch x 6 Inch with 4 Inch Lettering discharge-pipe-size_12" Spectrum stanchion posts have aThis pool depth marker states 3. 5 M and is printed with 4 Inch letters and has an overall size of 10 x 6 inches. The Deck and Coping Vinyl Depth Markers are skid resistant and designed for above the water line and deck placement around your pools and decks. Numbers, letters, and images are available in 4 inch lettering to meet National and State Codes. The vinyl stick on Depth Markers eliminate messy stenciling. They are made of a durable commercial