Long time hydro grower...first time posting

Great looking plants :) Got your stuff really dialed in here. To answer your question about watering the plants in their dark period. Being dwc i hope that your plants are never without water. Though you can feed in the dark period providing you have green light to work with any other colour of light will hurt your ladies big time. May even turn them into herms if done all the time. I fill my buckets just before the lights go off as plants tend to uptake more nutrients while asleep than they do while awake. I never have had any problems. Though looking at your plants it seems your doing everything right good luck for a bountiful harvest :)

welcome to THCfarmer @speedhydro
this doesn't answer your questions but come have a look here Trollish One Pound One Gallon Challenge and join us on this challenge. should be fun