This is an interesting read. We have very hard water in my area, and I've been using the water from my (basement) dehumidifier for years to dilute my APCs.....never had an issue.
To me....dusty and dirty are two different things. If it's dusty, Gyeon Ceramic Detailer....if it's dirty.....quality rinseless wash.....plus clean, plush microfibers in either case
Wash them all together using All Free and Clear. Use the 'rinse and spin' cycle to get as much out of them as possible. They go into the dryer for 30 minutes on 'air dry' and then hang until completely dry
Biggest game changer.....adding the battery pack to my IK Foam Pro 12. So much easier than pumping......and easier than having to go back and recharge it with the compressor when it runs down