I was advised to get a second filter so that when they are rinsed weekly with a hose they can dry before putting them back in the tub. I thought that sounded strange but apparently the fibres in the filter close properly when allowed to dry. Anyway I have two, and rotate them weekly, giving them a week to dry. Also, when I use the cleaning fluid every few months I can soak them overnight.
Has anyone else heard about allowing the filters time to dry or was that just to sell me a second filter?