I got my sun sun and set it up the at the end of October. I changed the media this afternoon. Although I did not see any reduction in flow, I could not believe that I would not have to mess with filter media changes. I thought 6 weeks was long enough since I tend to overfeed. I expected terrible looking media.
Anyway, the media was barely soiled. The media was soiled on the bottom but had not clogged. I had no problems getting the baskets out. I was very impressed.
This was my first cannister. One thing I did not realize about cannisters is the direction of flow. The sun sun uses a pump in the top section which draws the water from bottom to top of the cannister. This means that the media would have a tendancy to lift away from the baskets, causing the media to be bypassed. I must of had enough media installed to keep it seated since I did not see any indication of bypass (large pieces of debris on top of the media).
Anyway, mine seems to be working great.
They're silent and work great. Definitely recommended.
