GHE basic 3part - I don’t use much epsom at all, some strains like a bit extra sure.
I folia feed with biobizz fish-mix as the only other thing I use, beside GHE Gro, micro and bloom.
You should take a look at my thread “The LED hack shack and other tall tales”
It’s faily long and a lot of me building shit, but there is also a bunch about my hydro.
Pictures and notes on Ec and pH, on the given time of flowering.