Hi everyone, I’m in prohibition land. I have struggled with my babies, all my grows have the same problems. My autos plants never grow tall. Currently ak47 and white widows. I’m running 2 mars led lights. 300 watt watch. And my 600 hps in the center off a 8×4 space. I’m in coco perlite mix feeding cal mag iron mag, pk booster, silica. Super thrive. B52. And a an b nuts. Water every second day. Temps 70 to 80. Humidity 50. Ppm 1000. pH 5.5 to 6.5. Lights hung high or low , same results. No complaints on quality size or looks. But lucky if I get 2 oz per plant. I don’t no my co2 or par numbers. But i would think in my home 10 autos 3 lights and mixed hps and led power, id get better numbers , keep it real, rock on. Thanks fellow smokers growers and lovers.