Never smoked/First grow

They have started flowering and the growth has been amazing to watch. I guess this is why they call it the "stretch". The bigger of the 3 plants is a little behind in buds, the one slightly smaller is forming a lot of buds and they are looking healthy. The runt of the bunch looks healthy but less than half the size. I started adding Tiger Bloom every other day, about 1.5ml/half liter for each plant. It's been colder and higher humidity lately but I think it's looking warmer ahead. I'm a little worried about humidity being too high at night but with an outdoor grow there is only so much I can do. I am adding a vent fan controller off a humidity controller for the nights to help a little.