It also asterisks that thing about pH/surfactant, saying to adjust, if needed. I admittedly adjusted it without first testing it, because I did not trust it to not burn this strain, which is I have found to be sensitive to nutrients over many grows. If the people over there say 4.7 is ok, I will do that next time.
Feedwise, Dirty is listed as using the exact same mix as their hydro products.
I have grown this strain several times, and I promise you, by day 21 it’s going to be throwing pistils. The bottle instructions say feed every 5 days throughout veg and a couple weeks into flower; veg for this strain starts now and ends in a week or so. I have been using kelp products during autoflower veg without any adverse reaction, as have many other growers.
I grow organically. I am sacrificing one of my favorite strains to test a product I would most likely never choose to use. Why? Because I like experimenting and testing things. I am not a pro. Just a home grower trying to grow the best weed I can for myself. Home growers do things differently than you might approve of or that a company might approve of. We have to, since most products are not developed with us in mind.