I will add this, we transferred from 2 gal buckets to 5 gal buckets a few days before the switch, which gave them a whole bunch of new soil. The only nute I added during 12/12 cycle was a bloom enchancer. Then again I was probably one of the lucky ones. Never had a pH problem, bug problem, no hiccups, except for the one that hermied on me. Not sure why that happened, except that is was bag seed.