Well water have high nitrate this year, sometimes over 85ppm.
For some reason though, (yes, my discus tank is still here)
this year, discus seems to grow faster, tetras became more active and I haven’t had any fish affected and death by diseases other than some newly purchased zebra danios from the store, and accidentally decapitated a betta during water changes.
Do you think there are any factors behind it or was it just some strange luck going on?
How did you discovered that? Can you send a link to that forum post if possible?