i am really confused about if water test strips are reliable or not because i have been using tetra 6 in 1 test strips and they were almost run out so i bought some API test strips and the results are totally unreadable to me the ranges are too big and i can’t even tell what colour they are supposed to be are test strips even reliable and if not what should i buy instead my experience with the tetra strips has been good i’ve used them for years but now i don’t even know if my water is good quality or not,