Stick answered grow question 4 years ago Hi @Aldanil! I think you're over-feeding AND under-watering your seedlings. You should apply a wet/dry cycle with quick phases, each phase should last a few hours or a day max. Now about the nutrients, considering you're growing in soil, your medium already has enough nutrients for their 2 first fragile weeks. Too much nutrients & not enough water = best way to get salt buildups and toxicities. A root-stimulator can be useful but use it slightly and not in every waterings. I've been using BioBizz for a while and had great results using the following schedule: http://www.420magazine.com/gallery/data/500/Untitled124.png. This schedule has been tested & approved by me & other growers around here with automatic strains. Would you give us your feedback in a few weeks? Happy growing :facepunch: