Three different strains of feminized autoflower seeds from Bonza. They were all planted on 1/20/17 in a 4' x 4' x 6' grow tent and are under a 1000 watt MH bulb for 18 hours a day (18/6 cycle). My question is, why are the plants so petite? No issue germinating, Proper Watering, Soil Tended...