Make spring pool openings faster, cleaner, and less stressful with the AquaPill WinterPill™ All-in-One Pool Winterizing Capsule. Designed for serious pool protection, WinterPill uses an exclusive 4-part formula with enzyme enhancement to keep water clearer and surfaces protected all winter long.

Unlike traditional winter chemicals, WinterPill works continuously beneath your winter cover using a patented 6-month delivery system. Its advanced blend includes a clarifier to maintain water clarity, a scale inhibitor to prevent mineral buildup, and powerful stain inhibitors to protect against iron, copper, and manganese staining.

Enzyme-enhanced technology actively breaks down organic debris, helping prevent water rings, improving filter efficiency, and boosting sanitizer performance—so your pool opens cleaner with less work in the spring.

WinterPill floats all season, performs reliably under mesh safety covers, and is safe for all pool surfaces and filter types. One large capsule treats pools up to 115,000 litres (30,000 gallons), making it a simple, effective solution for residential pool winterization.

Key Features & Benefits

• All-in-one winterizing solution with clarifier, scale inhibitor & stain inhibitor

• Enzyme-enhanced formula destroys organic contaminants naturally

• Helps prevent waterline rings and surface staining

• Improves filter performance and sanitizer efficiency

• Floats under winter covers all season

• Performs well with mesh safety covers

• Patented 6-month slow-release delivery system

• Safe for all pool surfaces and filters

• One capsule treats up to 115,000 L (30,000 gallons)

Directions for Use (Summary)

1. Determine the number of WinterPill capsules needed based on pool size

2. Shake capsule well before use

3. Use the included piercing tool to puncture the cap as directed

4. Place WinterPill in the pool—it will float and dispense formula all winter

5. Remove capsule in spring and proceed with pool opening

Pro Tip from PTL Direct

For best results, balance your water chemistry before closing and remove large debris from the pool. WinterPill works most effectively when combined with proper fall closing practices—saving you time, chemicals, and cleanup in the spring.

Warranty Information

Natural Chemistry pool chemicals are backed by a 30-Day Limited Manufacturer’s Warranty.