Why my plants have little smell ?

Is it normal only have little smell it been 6 weeks of flowering ? Or what did i do wrong .
TWO 400 watts light one hps and one mh
nute 5-15-14
temp 79
about 6 week flowering
Any advice guys ? thanks

You dont have much bud so ie little smell.What till it fills in more.Looks like your doing sativa so your on a 10-12 week flower and looks longer from the pics.The smell fills in later on some sativas and really comes when harvesting

What strain are you growing? Some strains have much less odour than others.