The Sediment Filter is your first stage of water filtration. Sediment filters reduce sediment, dirt, oils, and suspended solids before they get to your Carbon filter. Over time sediment filters will clog reducing the quality and GPM rate of your filter system. Every 3,000 gallons or when clogged replace your sediment filter to keep the best quality of water going into your system. Improving the health of your plants, fish, and microbiome.