If after the water change these are the results then the nitrItes were initially off the charts.
Judging by the colour, nitrIte could be off the chart again. You can do a 50tap/50tank water test to see if it shows lower but either way it's too high.
Another water change maybe
Judging by the colour, nitrIte could be off the chart again. You can do a 50tap/50tank water test to see if it shows lower but either way it's too high.
Another water change maybe


