I have a 2028 and I clean it once every 6 months. I prepare 3 5-gallon buckets with dechlorinated water a couple of days ahead and use one bucket each to rinse each of the 3 trays of hard media. I found that using one bucket for all 3 trays wasn't enough. The water was pretty dirty by the time I rinsed the last tray of media. I just rinse the blue coarse sponge real well in plain tap water and replace the fine white pad. I always check to see if the output pressure is reduced when I do my weekly water changes. In addition to the 2028 I also have 2 HOB filters on the tank so that may be why I can get away with cleaning it at 6-month intervals.