okay, so I just tested my parameters in my 20 gallon high (8 skirt tetras, 6 panda cories) and got these results. Nitrites looked to be somewhere between 0 and 0.25. But ammonia looked like 1.0! This is a cycled tank so I tested again because that just didn’t seem right. And now it’s testing 0! These tests are MAYBE 10 minutes apart. I’m doing a water change now to be safe but any ideas??? How could it be 1 and then immediately 0? Each test was left to sit about 10 minutes to develop. First two pictures are the 1.0 ammonia and the second two are the 0.