Review on Nutrafin Replacement Test Tubes - Convenient 2-Pack for Fluid Testing Convenience by Brittany Rodriguez

Fish Water Test Kit. mini master. I bought it, it's easy to use. However, I found the test tubes in the kit to be thin-walled and brittle. I broke both within a few months. The replacement tubes were the same as the original tubes and not very expensive to purchase. I ended up ordering 2 sets. This allows me to compare the results of the water analysis in several aquariums.