The tank he was in is so much freaken work. The nitrates tested close to zero haha. That and he showed no signs of illness. Fed him the day before, found him dead when I got home. I was more pissed than anything else. So much work for that little guy and he didn't even live a year.
surprised it was a lot of work, even in my 30 litre betta; one bucket a week and some pothos in the filter keeps all levels practically zero; it's pretty much prompted me to steer away from large tanks entirely