Review on Senzeal Checker Aquarium Monitor Indicator by Pamela Smith

I wanted to fall in love, but unfortunately form is more important than functionality. It's likely to give inaccurate results due to its location so close to the surface unless your tank is filled to the brim - a more traditional form an inch below the surface with the same liquid gives me a color that reflects actual CO2 levels . when testing. In my case, this test program became more and more yellow, regardless of the tested CO2 value.