Review on 💚 1 Gallon Green Water Tracing Fluorescent Dye for Leak Detection by Joshua Weaver

The product arrived quickly and appears to work as advertised. Tested in toilet tanks to see if flapper valves are leaking. Highly concentrated, about half a teaspoon will turn a full tank a bright fluorescent green. Used about a half gallon to find the source of the excess water leaking into the sump pump system. The source has not yet been discovered, but that is not the fault of this product. Buying a UV flashlight is recommended, UV really makes them glow!) It would be helpful if this product came with a quick guide, particularly for analyzing rainwater issues and required concentrations for various conditions (hydrology for kettles).