SeaKlear’s winterizing kits can each treat up to 20,000 gallons of pool water. The kit includes SeaKlear Free & Klear, SeaKlear 90-day Algae Prevention & Remover and SeaKlear Metal Klear. Free & Klear is a 3-in-1 care product that is designed to remove phosphates and oil, and control scum. Metal Klear is designed to prevent metal from staining surfaces. Come spring customers can flip the box around for a Spring Start Up kit. Contact: SeaKlear Water Treatment Solutions, (866) 995-5327;