Calcium Inhibitor on Misting system safe for orchids?

[markalolo]

Hello, we are going away for a couple weeks and plan to rely on a misting system for our bare-rooted vandas. I know that misters will plug up quick with our relatively hard water in Central Florida. Is it safe to use something like this Misting Calcium Inhibitor Filter | Poly-Phosphate Water Filter | MC 601 Poly-Phosphate Water Filter to manage the calcium? I can't tell exactly what's in it, it just says "Poly Phosphate Filter."

Thanks!

Mark

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