That WW is going to be a monster!
btw ljuf, this is a good hydro grow, done by Seymour Buds with the beginner in mind, he explains everything along the way.
At day 7 his starryders in this diary were at ec 1.2 and pH 5.8 ...
https://www.autoflower.org/f52/dutch-passion-starryder-grow-seymour-buds-9002.html
steely