Originally Posted by jeffaquarius
A bad test equipment doesn't justify a conclusion that they are all bad and unreliable. A bad swing arm hydrometer is as bad as a defective refractometer.
That's a fantastic point. However, when you spend $12 on a hydrometer that you later find out is completely inaccurate which confirms exactly what dozens of people have been telling you about them; are you going to go and spend another $12 on a second hydrometer or are you going to instead spend $25 on an refractometer which the entire reefing community trusts?
How about test strips? Are you going to use them later to find out they are inaccurate then go out and buy more just in the hopes that the next batch will be better despite the reefing community telling you otherwise?
With the minuscule difference in price between a refractometer and hydrometer why would we trust hundreds to thousands of dollars in living creatures to save $13?