Ok, I bought a filter exactly like this one (but in blue) http://dreamstreamr.files.wordpress.com/2010/02/p1050886.jpg from the local Lowes, to use on my hose when washing my car, and it doesn't even really make a difference.
My first question is what am I doing wrong? And secondly, what do you guys use to keep spots from forming?
My first question is what am I doing wrong? And secondly, what do you guys use to keep spots from forming?