The Hanna Alk is perfect. It's their best checker. Phosphate is ok, just have powder reagent to deal with, but it is in pre measured pouches. The salinity probe should be good too, I just dont have any first hand experience with it. The copper checker has the fish disease forum stamp of approval as well I do believe.Well Hanna all and calcium and Milwaukee salinity I won't get now. Thanks guys.
I'd steer you away from any of the others. They do not work as advertised.