Yield is not so much what I go for. My colas I grew where the highest of thc concentrations as I only use a low tds of short half lived organics. The same size nugs with synthetic or mined elements for npk would have weighted 4 times as much. I use earth juice grow at 80ppm and 20ppm maxicrop flakes. The taste is unmatched and you will not have to worry about burnt tips or flushing really. I keep the same mix through flower as switching npk can cause stress and P only adds weight with lack of balance (scar tissue) and speeds flowering through stress. People do not use it in veg as it injurs genetics. From my experience the heavier the nug the more head ache or dumb feeling which is not getting high in my book. Light and fluffy is the headie shit