I agree, today I am buying a refractometer. The ones I was looking at were about $100.00, after looking a little bit more I realized that they were way too profession al for what I need. For $40.00 what the heck.
After I bought the digital PH
meter I realized that things can be done easier.
Now if they can come up with a better way of measuring Calcium rather than counting drops and multiplying like the Nutrafin, any ideas?