Bud mold checklist

Anyone wanna a checklist of things to do to be guaranteed to not catch that sht man
Prob gonna do my head in next few grows now worrying about it
I bought small dehumidifier seems to keep it under 40% humidity
Prob gonna run that my next grow defo lights off constant Prob a hour or 2 after lights on as well
The buds be massive man
I grew hps the buds Prob woulda got more airflow the leds
I'd a 16 inch fan blasting the buds thst caught it ???
Could that have contributed

There is no guarantee, even with hepa filters and clean rooms, the spores are everywhere, attached to your clothes, in the soil, floating in the air, everywhere! The best you can hope to do is minimize the possibility of mold by making the environment as inhospitable to mold/fungus as possible. Low humidity, good airflow, clean grow space, etc.