They are in 10 litre pots of soil, in a 4by4foot cupboard on my balcony, the ceiling in the is higher than the rest off my property. The whole room is foiled out. Air in and out is good, humidity isn't too bad, they are all around 25 inches tall. By a couple leaves I actually mean quite a few up and down the whole plants. Your help and patience with me is appreciated (first time grower) they were in veg for roughly 21 days. On a 18/6 cycle.