humidity in veg.... as my general rule, as high as possible... but im pretty sure text book is between 30-80% RH,
last year i ran my tent at about 90% and the growth was mad
also you may all think im mad but play your plants some music each day, it opens the stomata(or whateva its called) classical music is the best, i listen to techno/electro most of the time, which seems to improve the growth, apparently its all about high tones, but to many high tones repeated for 2 long will shut them(stomata), if u dont believe me, ask someone from canna nutes
peace!