Biotope19 Posted November 18, 2022 Share Posted November 18, 2022 I just started using the aquarium co-op testing strips. Here’s a picture after testing one of my tanks. As you can see the KH purple color does not match. Any experience with this? What does this mean? Thank you! Link to comment Share on other sites More sharing options...
modified lung Posted November 18, 2022 Share Posted November 18, 2022 It seems like this is common with the ACO strips in hard water at least above 250 ppm. I'd just interpret it as "very hard". pH also seems to read exactly 1.0 too low in hard water as well FYI. Everything else seems super accurate regardless though. 1 Link to comment Share on other sites More sharing options...
Biotope19 Posted November 18, 2022 Author Share Posted November 18, 2022 Thank you, that’s what I figured. It’s “off the charts”. I also noticed my buffer and PH is lower than expected. Link to comment Share on other sites More sharing options...
dangerflower Posted November 18, 2022 Share Posted November 18, 2022 I've also noticed this with mine but my water actually has very low kh. It's weird 🤨 1 Link to comment Share on other sites More sharing options...
TeeJay Posted November 18, 2022 Share Posted November 18, 2022 Yes my gh does the same thing on the test strips. Off the charts. I only get a better "true" gh reading with the liquid kit. But on the other hand I have 0kh out the tap. 1 Link to comment Share on other sites More sharing options...
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