I did the full range of tests today, starting with Ammonia before another 6% water change: 0.25ppm. A short while after changing some water the results were…:
Ammonia, 0.25ppm. (pic shows the before and after Ammonia tests)
Hmmm. I’m enjoying the test tube experiments even if there is little or no change at the moment!
Most importantly, the fish are ALIVE!