I just did a 25% water change in my 5 Gallon tank with 1 Betta and this is the Nitrite reading - should I be concerned? I was doing 25% water change once per week - should I be doing it much more? I'm using conditioned water, have a couple plants, have a heater, temp is at 80 degrees, use a filter, no other fish, etc. I made sure the water was conditioned today that I put in and it was 80 degrees as well. Fish is acting fine.
Please let me know, I'm super worried: