Filters Fit Miracle-Gro AeroGarden Pumps. These filters keep roots out of the pump to provide optimal water flow! We recommend you replace your filter ever 6-8 months.This is a generic product designed and engineered in the United States by Think Crucial. This is not a Miracle-Gro® OEM product and is not covered under any Miracle-Gro® manufacturer's warranty. Please check your manufacturer’s warranty with regard to the use of non-OEM parts. Think Crucial provides no warranty or guarantee with regard to the product or its compatibility with your Miracle-Gro® product. Any use of Think Crucial non-OEM products in your Miracle-Gro® product is done at your own risk. The Miracle-Gro® brand names and logos are the registered trademarks of their respective owners. Any use of the Miracle-Gro® brand name or model designation for this product is made solely for purposes of demonstrating compatibility.