Thanks for the advice
Sometimes I use glass magic in the dishwasher. I started doing that because my kids saw me using hydrogen chloride in the dishwasher, and wanted to do the same (mommy does it). Glass Magic is 20% phosphate, 80% ???. At $5 a small box, its outrageous. I am glad to find out about tspp from this thread. I think it would be better on the environment to use a little tspp, then to use 3X detergent and twice to water to get the dishes clean. In the desert algae buildup is not a problem, conserving water is.