End of Week 4.5 from Seed / Start of Flower Week 1: Plants are already flowering. Dark Devil is the tallest, next is Purple Punch. Crystal Candy is shorter but bushier. There are some bottom leaf issues and a couple lightly burnt tips. Adding flowering nutes next week.
Yes week 5 is EC and PH stacking caused buildup in your medium. Since I want to automate watering I'm learning about this and discovering how watering frequency of a somewhat constant content and duration is how you control a stable PH and gradually rising EC in your grow.
The beginning of this recent video shows a good example of steering feeding just keep in mind you have to analyze your own grow medium.
www.youtube.com/watch
Noticed after vigorous growth in week3 seems there was a stunting between week 3 and 4 possibly from too much dry-back and not enough microbial activity.