Filter Perfect is a highly concentrated deep cleaning solution that removes deep set oils, grease, and scum build-up on pool and spa filters. It is very effective on cartridge elements, DE filter grids and sand filters. Filter Perfect improves filter efficiency and lengthens cycles between filter cleaning. Filter Perfect contains SMARTZyme technology. SMARTZyme technology wastes no time breaking down organic materials. A small amount of Natural Chemistry's enzymes can treat large amounts of water due to their ability to bind to organic contaminants and reduce them to smaller and smaller parts, breaking them down to their original components such as carbon dioxide and water.