Oh yea I just juiced them with the lucas formula at 1600PPm's that's over 2000 with all the additives. AND no leaf burn. I can barely keep humidity down below 40 with lights on and low 30's with light off, oh hell I smoke tooooo much that's why I always run out. When I can see straight I will get that addy out. You will have some in about 3 weeks too. There I go again. Later