Dont defoil at all only removed attacked leaf with deficiency-in early grow ,i have 4×8 home made grow box exterior(3,8x7,6) with 4inch insulated wall,2x400w hps + 65w cfl 6500k. I only use 1 hps and cfl to week 4 with 24/0 scedule. I topped 4 of my 9 lady and add other 400w and switch 18/6 .on week 8 i put my 5 other lady non topped outside and i start little training ,tie down plant little in each water (3-4 day) and i put it in flowers at end week 9,she now starts make buds