what cha need is a good size hole where fresh air comes in usually a window is perfect, then some Exhaust Fans & Circulators then, Temperature & Humidity Gauges and some Atmospheric/Environmental Controllers to tell you hows eveything is doing and soil foxfarm soil is great its organic but check...
yup and sounds that your roots are not strong enough yet bro, add some root nutrients to help the roots get stronger if anything man, you said it your self their clones