Pretty sure, but I will calibrate again to be sure. I didn't expect this, but I have already spiked Ammonia to 2ppm this morning. Would that lower it even more?Let it degas longer if you're unsure but, regardless, 5.7 does seem low....are you sure your pH probe is calibrated?
I will calibrate and continue to watch. I'm using the established filter on this tank and removed all the live stock. Should I water change or just keep it at 2ppm and wait? I have a few plants in and more arriving this week.I just google'd ammonia and apparently it's a weak base, so it should actually raise your pH