Check the listing for details. Natural Chemistry Pool First Aid 2 L 13122NCM. Condition: New. Listed at 24.30 USD. Natural Chemistry Pool First Aid combines powerful SMARTZyme technology with an organic clarifier to quickly fix pool water problems. Pool First Aid will: clean water of dead algae, pollen, oil/fuel leaks, spills, antifreeze residue, paint, vandalism, and other forms of Non-living organic water contamination. SMARTZyme technology wastes no time breaking down non-living organic contaminants. Dosage: For best results make sure the sanitizer level is below 5PPM.Add one cap full per 2,000 gallons of pool water. Keep the circulation system running 24 - 48 hours after application. Please note: Do not shock during this period.Natural Chemistry Pool First Aid combines powerful SMARTZyme technology with an organic clarifier to quickly fix pool water problems. Pool First Aid will: clean water of dead algae, pollen, oil/fuel leaks, spills, antifreeze residue, paint, vandalism, and other forms of Non-living organic water contamination. SMARTZyme technology wastes no time breaking down non-living organic contaminants. Dosage: For best results make sure the sanitizer level is below 5PPM.Add one cap full per 2,000 gallons of pool water. Keep the circulation system running 24 - 48 hours after application. Please note: Do not shock during this period.