I’m about tired of the Tropic Marin Hydrometers

[Bouncingsoul39]

Basic, really not sexy at all, but dropped a dozen times in 20+ years. Each time bring on next trip to LFS comparison to their refractometer, and 'yep you good'....

I’ve used this one too for many years and it’s not failed me yet. I tried a fancy refractometer once and I didn’t like having to calibrate it. This cheap thing is about as simple as it gets.

 

[14 foot reef]

I've love the Milwaukee meter solid as can be now for 5+ years, here's the newest version of the one I have

MA887 Digital Seawater Refractometer - Milwaukee

The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated. PSU - The newest type scale standard – Letters stand for Practical...

www.bulkreefsupply.com

 

[PanhandleReef]

Been using a Oakton Cond6+ conductivity meter for a while now and it is amazing. Holds calibration, reads quick, and is versatile. I can quickly check 3 tanks, mixing station, and Kalkwasser without having to wonder if it accurate.