Orchids & Nuvoh2O Water Softener System

[EdZap]

My plumber recommends this "new"" entire home water softener system that DOES NOT use SALT because I am installing a tank-less water heater.
It chelates mg+ & ca+ with a time released citric acid formula, " Citra Charge ". (BTW usually water softener systems only filter the house water, my plumber gonna figure out my old plumbing system).

"The nuvoH2O Manor system uses revolutionary technology to lower the PH level of water based on the basic scientific process of chelation in which the metal ions causing hard water, principally calcium and magnesium, are bound to the chelating agent in nuvoH2O's FDA-approved, proprietary formulation, which keeps the minerals soluble and unable to cause hard water problems. The resulting water is soft and healthy for all of your household uses, including drinking, bathing, washing, and lawn and plant watering."

Does anyone have any experience with this product regarding using on your Orchids? Concerns about the pH?