I just disasemble the RIO to clean it. I have the original Rio that came with mine. I take out the impeller and clean the shafts and all, and clean the air and water supply lines connected to the powerhead too. I know of 2 people that have had problems when the little tube that runs water from the input to the output on the outside of the powerhead get clogged. I replaced the original tubing with silicone tubing, it seems to hold up better than the one rio used, and doesn't get clogged as quick. I would recommend cleaning the tube out every 2 weeks. I get about 1/4 to 1/3 a cup a day of waste. I empty mine everyday regardless of how much waste is in it. I think the amount of waste will depend on your bio-load and how high or low your cup is set in the skimmer. The first few weeks, it was hard finding the right postion for the cup, but give it some time, a little trial and error, and you'll find just the right spot to keep it all the time.
Ben
[ December 19, 2001: Message edited by: benneb1897201vw ]</p>