i cant help but question how hot ur box is running looking at the lankyness of em...for the most part internode distance is directly proportionate to available root space durring flower and temps thruout the grow... i grow ak47's durring veg nodes are spaced about 1/4 inch apart and at harvest theyve stretched to about a 1/2"... i do this by controlling root growth and controlling temps to a t. humidity plays a small part too but, ive only begun testing in that realm. so conclusions are foggy at the moment, as is the rest of my mind... so far humidity seems to only effect the lushnes of the leaves, both size and color(drier air causing smaller leaves and faint colors and also an increased succeptability to nutrient burn, the plant has to use more water because more is evaporating through the leaves, therefore it alkso takes in whats in the water...nutes.) cripes, sorry... ramle on... fuggin' stoners Happy Growin'