Fleck KL1000-25SXT KL1000, 10 GPM Whole House, Almond Tank but May Vary New technology! Uses a fraction of the water compared to other iron filters! No salt, no chemicals! Easy for the do it yourself to install Only has to backwash once a week! Only needs 2-3 GPM flow rate to backwash! Removes high levels of iron and Sulfur! Also filters sediment, rust, and removes arsenic