So you think this could be HITH?
Tank params are NO3: 10ppm, NO2: 0ppm, NH3: 0ppm, pH: 7.2, temp: 26degC
I usually do 15-20% water changes a week, but since this happening I've been doing 50-60% every other day and also tried doing double-strength doses of melafix every day as well. But it's...