We recommend changing the Aquarium RO Pre-Filters approximately every 6 - 12 months depending on use. If your average use is approx 2-3 GPD, change them after 12 months. If your use is 5-6 gallons a day, change them after 6 months. Adjust accordingly for higher or lower average use.★ Get The Most Out Of Your Aquarium RO System!
Keeping up with RO filter changes is a great way to ensure that your Aquarium RO Membrane reaches its full lifespan - or beyond.