Yesterday I went to a 1 year old job to do some routine maintenance and found the fixtures (powder coat alloy) and the lenses were significantly stained white with hard water stains. The lenses were so bad they looked like frosted lenses. This is the only job I ever had that is on well water. I have jobs going back 5 years that the fixtures and lens clean up like new with a little water and towel dry. Does any one have a sure cure cleaner for these hard water stains? There are over 100 fixtures on this job so I need something that is quick and easy and works really well. Thanks, Jim C.