Might be a while still but sounds like it's getting closer to production (this article is older but they're doing focus testing now). If they can get controller integration, dosing especially would be easy (and potentially automated).
http://www.advancedaquarist.com/blo...nge-how-aquarists-measure-aquarium-parameters
http://www.advancedaquarist.com/blo...nge-how-aquarists-measure-aquarium-parameters