So, I don't think I have a way to start flushing them at different weeks because Im using a single autopot. Maybe I can remove the jar of one of them from the autopot system. Ill prepare things.
About the Ec of 30. I dont really know what Ec means but I googled and is it the same as ppm? If so, yeah. Im watering then with around 1300/1500ppm (Im measuring on a flexibox so it is not always reliable for some reason due to the large amount of water (some of the nutrients go to the bottom).
Im using coco BTW.
Is 1500 too much? Too little?