<p>Essential Values Pool & Spa Filter Cartridge Cleaner is a concentrated formula that is designed to quickly and effectively clean your Cartridge, Sand, or DE Filters from any scale, grease, oil, or impacted dirt - restoring them to a like-new efficiency. Simply apply Filter Cartridge Cleaner to your filter and let it work in hours. Also, compatible with chlorine, bromine, and biguanide sanitizers - Buy Today!</p><p><strong>What does it do?<br></strong>By removing the build-up that accumulates on the media between cleaning Filter Clean improves both the efficiency and life of the filter</p><p><strong>When to use it?</strong><br>Use Pool & Spa Filter Cartridge Cleaner simultaneous when draining and refilling your pool</p><p><br></p><p><strong>Instructions for Use:</strong></p><p>Essential Values is proud to present a overnight deep-cleaning solution for filters to remove body oils, suntan lotion, grease, and other organic material as well as mineral buildup from filter media. Follow these Hassle-Free Instructions:</p><p><strong>Step 1: </strong>Remove grids and/or cartridge from filter</p><p><strong>Step 2:</strong> In a clean plastic pail, bucket or trash - fill container with 4 gallons of water, then add a half a bottle of Filter Cartridge Cleaner per 55 square foot</p><p><strong>Step 3:</strong> Place cartridge or grids upright in solution</p><p><strong>Step 4:</strong> Soak for a minimum of 3 hours</p><p><strong>Step 5: </strong>Finally, remove filter from solution and Hose off filter with an high pressure nozzle and replace</p><p>*Best Results Let Filter Soak Overnight</p><p><em><strong><br></strong></em></p><p><em><strong>Made in USA | Best Value on Amazon | 100% Satisfaction!</strong></em></p>