AquaPill WinterPill 4" Pool Winterizer 14.2 oz | 90222APL Pentair Above Ground Filter Systems Error Monitoring & Safety Features:

Error Monitoring & Safety Features:

Designed for use with Hayward pool systems to protect internal components

and outdoor weather conditions for long-lasting performance

Designed with high-temp resistant CPVC material

Also fits hayward northstar pump series sp4000

AquaPill WinterPill 4" Pool Winterizer 14.2 oz | 90222APL Pentair Above Ground Filter Systems Error Monitoring & Safety Features:AquaPill WinterPill 4" Pool Winterizer 14. 2 oz 90222APL AquaPill WinterPill helps maintain clear pool water during winter with clarifiers, enzymes, stain inhibitors, and scale protection. Features All in one winterizing treatment. Contains clarifier, enzymes, stain inhibitors, and scale inhibitors. Slow release formula works throughout the winter season. Helps reduce waterline scum buildup. Compatible with all pool surfaces and sanitizer systems.