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and heavier debris
This product treats and prevents green
a pint of stain and scale control
a powerful and intelligent automatic pool vacuum designed to keep your pool spotless with minimal effort
which chlorinate
SUSTAIN SUMMER SHIELD Size:1/2 Gallon and heavier debrisSustain Summer Shield provides pool water with an extra level of protection against algae. It does this by creating a backup of chlorine that is released on demand when routine sanitizing levels drop (below 1ppm), such as after a pool party or thunderstorm. Sustain Summer Shield chlorine extender also contains a clarifier to assist your filter keeping your pool crystal clear. Sustain Summer Shield is designed for use with the Sustain 3 Part System.