I wish I could test them when they arrive. I would send them back in a hot minute! Not being 100% accurate is in the nature of the animal when dealing with test strips over a digital tester or a simple vial test kit etc. We know this. There are times, certain fish, projects, circumstances where you need very accurate numbers. However, there are times when you're good at getting an overview. Test strips are good at what they do. Just know that they do NOTHING. What if all 7 of my tanks were EXACTLY the same? I finally tested my tap water. It turned out as if from a copier. It says NO CHLORINE. I have very heavily chlorinated city water that you can feel before you taste it. All analyzes are the same. It could be a party or something, but I'm still disappointed π
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