Check the listing for details. Natural Chemistry Pool First Aid 2L. Condition: New. Listed at 31.99 USD. Pool First Aid​ combines our powerful SMARTZyme​ technology with a clarifier to fix pool problems quickly. Cleans pool of dead algae, pollen, oils, spills, anti-freeze residue, paint, vandalism, and other forms of non-living organic water contamination Frees clogged filters of oil and other forms of non-living organic buildup Removes dead algae quickly and efficiently, in many cases without the need to backwash Pool First Aid​ is a powerful pool problem solver that works very fast - often without scrubbing! Directions: This product is designed for use in properly balanced pool water. For optimum results, add product when the sanitizer level is below 5ppm and wait 48 hours to shock the pool. Pour Pool First Aid​ into the pool water evenly around the edge of the pool at a rate of 2oz per 1,000 gallons. One capful treats 2,000 gallons. It is recommended to keep the circulation running for 48 hours after application. Do not shock during these 48 hours. Recommendations:​ Use every two days until the pool is crystal clear. Apply directly to the waterline to quickly remove any existing waterline buildup. Important:​ If the water temperature is below 70ºF, Pool First Aid​ will work more slowly so allow more time for results. SHIPPING: We will do our best to ship your order based on the shipping method selected, however in some cases, your shipping method may need to be modified to meet shipping requirements based on the carrier. Our current carriers used are UPS, FedEx and USPS. Please contact us directly through the "Contact Seller" link if you need UPS, FedEx or USPS specifically for your order.