Low yields, need some help.

[Medicatetoday]

Need a little more info to help ya man. 1st timer? Experienced? Dirt r Hydro? How long did you veg them? What nutrients did you use, if any? Help us help ya!

Im in my 3rd grow.
I veg for about 1 and a half month,i top every girl to achieve more tops,my temps are 82F,i use All Mix soil by biobizz, with organic nutrients like Bio Bloom, Bio Grow,Top Max,Bio Heaven...
I put my plants in flower when they have 12 inches-15 inches.
I got a fan circulating the air inside the growroom and a 107 m3/h intake and outake 190 m3/h.
400w hps with an adjust a wings reflector.