Could also be the start of sooty mildew possibly caused by aphids. The white debris looks like the hatched eggs. Maybe? Maybe not. I would spray with neem oil if still in veg.
Yeah. I started feeding veg nutes around week 4 after the ocean forrest ran its course. I vegged for 7 weeks. I started the second watering after flip with bloom nutes as i wanted one last round of nitrogen to carry it through.
I ran the fox farms open sesame for weeks 1-3. Beastie bloomz from 3-6. And fed with cha ching this watering. EC of 1.8 every other watering. Its in ff ocean forest with perlite.
I read to water with ice water on purple strains to bring out the color. My guess is too much nitrogen with temps being in the 70s+ at all times. My 2 cents.
Just popped some new beans in the veg tent.
1- white widow fem
1- og kush fem
1- critical mass fem
2- red hot cookies fems
2- royal gorilla fems
Should be a nice mixed crop.