I remember during my second indoor grow with freedom farms I asked around what I could add to the soil, because of problems I picked up during my first run, was told to add calcitic lime - a hand full to 30L of soil, plants got fucked even worse than the first round. lol this is how we learn I guess!
for now I found the best way for me to grow in their premium classic soil is straight water till they show first signs of N def then topdress with wormcastings. I only start feeding any biobizz nutes during flower.