Do test kits go bad? Is there a date I can find on them that says when they go bad? How can I tell if it is not working correctly? I have a Red Sea Phosphate Pro kit I am thinking is no good but again I am not sure.
Yes they can a least that’s my brother in law told me
He ordered new test kits and it was reading bad so he went by the test and dose what he thought he needed the end result was corals dying
