I always keep this on hand. Wouldn’t trust any other product.
This should be a staple in every house with an aquarium.
So close to being the complete package. Very easy to test & match the color. Just wish it had a way to test (GH) general water hardness & (AK) alkalinity. So I use both liquid & test strips to stay in the know.
It gets the job done and very easy to use love it
I find this more accurate than strips.