Review on 🔬 Hanna Instruments Artificial Refractometer Measurement by Rodney Gonzalez

I have a seawater tank. This is my seventh tank. I've gone from swing arm hydrometers (horrible) to refractometers (much better) to this one. It's expensive, but you no longer have to look at the phone to get a reading. I actually bought it as a fallback for my refractometer, but now I use it primarily. Extremely accurate and easy to use. I also think it outperforms the expensive salinity sensor that is in the tank and needs to be calibrated and eventually replaced every 2 weeks. The size is not listed in the product description - it is the size of a shoe. Highly recommended.