In this Special Edition episode of our series, Mr. Saltwater Tank - Raw, Uncut, and First Impressions (R.U.F.), Mark takes a first look at the Marine Master Multiparameter Checker from Hanna Instruments. We'll review this brand new checker that combines multitudes of tests into one, compact unit, by putting it to work. We'll run a pH test and share our thoughts on this and what we'd like to see from it in future variations. | SaltwaterAquarium.com