KBOzzie59 Posted May 25, 2021 Share Posted May 25, 2021 Opened my last bottle 5/21. Tested 2 tanks and both showed 80+ nitrate, 50% water change on both then re-tested. Still 80+, tested with API master kit and they were right at 20. Here is the stamp on the bottom of the bottle in case you are seeing some weirdness using them. CooP strips pinged in at 25. 1 Link to comment Share on other sites More sharing options...
Colu Posted May 26, 2021 Share Posted May 26, 2021 (edited) That an odd one I like to have two test kits for things like ammonia and nitrites as a control so I have liquid test kit and test strips to be on the safe if one off I will check with other to make sure am getting a correct reading Edited May 26, 2021 by Colu Link to comment Share on other sites More sharing options...
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