Up till now I've been using 100 micron filter bags on one of my tanks and simply replacing them when they clogged. However, I'm realizing this is quite wasteful, and would like to start cleaning and reusing the bags... I've read that you can wash them and reuse, and I've read about people putting them in the washing machine, etc., but wanted to get some input on what you guys think is best. I do laundry in my building's basement and have no idea what kind of detergents folks are using and what residuals might be in the machines... Not sure this matters though, as I guess you can rinse the bags in freshwater afterwards... I've read soaking in sodium thiosulphate works to remove bleach residue... Anyhow, what would you guys recommend as a good cleaning procedure for these felt bags?