Whats the ph of your run off?I use tap water which in most cases comes out at 7.0 to 7.2 i try to water at 6.8 to 7.0 is this to high a ph for a soil grow, im using FFOF in 3gal. pots
spots could be from a def. or bad ph fluctuation.. When using soil i always water til i get at least a 3rd run off.. This helps to keep salt buildup down as well as keeping the ph stable..right now d
not sure, plants are only 2.5 weeks, doing well but the yellow spot have me consened.