What were your readings for ammonia and nitrite after that, Zain?
What were your readings for ammonia and nitrite after that, Zain?
If that was after your water change, I'm afraid you need to do another one.
Ammonia and nitrite need to be below 0.25ppm; don't forget that'll they'll go up again before your next change, so you need them to be well under that level after a water change to take that into account.