I wanted to give Donlon Plumbing in Ventura County a big thank you for the simple plumbing tip. We received a call for low water pressure in a Ventura home rental we manage. Pete Donlon, the plumber, suggested we take off the high end shower head and soak it in CLR in a bag for a few days. We followed his lead and sure enough the shower head was as good as new–the hard water build up cleared right out. Thank you Donlon Plumbing in Oxnard.