Your Salinity

[midgetwaiter]

Originally Posted by TheGrimReefer

you're just talking about hydrometers, right?

No refractometers too. If you take a look at what Steven Pro found when he tested a bunch of hydrometers recently (there's a link in the library section) while hydrometers certainly aren't good they don't deserve the reputation they have either. You could say that it's easier to get an accurate reading out of a refractometer but look at What Randy Holmes-Farley wrote in Reef Keeping a couple months ago. Calibrating a refractometer isn't a simple as most people think and if it is setup wrong then it isn't going to be any better.

I'm not saying that an accurate salinity measurement isn't important but whatever common method you use is prone to error. Given that determining if you really have yours at 1.023 or 1.025 is probably is either going to cost oodles of cash or involve some sort of voodoo.