Thank you Daniel! This is all very interesting. This makes me want to invest in some different monitoring. While total ammonia probably drives the cycle, the concern over toxicity is important in the fish in process.
I suspect that tanks may always be micro cycling as factors change. Number of fis, plant decay, water changes.
I need to put some consideration toward the cause of toxic and non- toxic ammonia.
I truly appreciate your time in providing this tuition!