End of Week 3 from Seed: lots of growth this week, and all autos are showing pistils. They continue to be generously watered every other day with a solution made weekly of filtered water with 1/4 tsp Mega Crop & 1/4 tsp Cal Mag.
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.