Anything that's not related to photography, except religion and politics*. Discuss Britney Spears, your Kiss records, swing dancing, salsa recipes. The Off-Topic forum is moderated by
walterick and adina. *Religious and political threads will be deleted
I think there is no need to count water filtering system benefits. If you want to find and choose the best option, check reviews of various companies here https://rainsoft.pissedconsumer.com/review.html. Nowadays there are many options so checking reviews is the best way to avoid bad service.