I started growing these habanero plants at least 4 months ago, I moved some of the plants into bigger pots about 3 to 4 weeks ago.
I'm hoping for some tips/advice. The temperature inside the house is 66.2 F (19 C), the enclosure the plants are in is by an eastern facing window, but I live in Alberta, Canada so there's not a whole lot of sun light outside for the next few months, last 3 days have been cloudy and fairly dark outside.

I was thinking of adding another T5 tube on the other side of the enclosure but I don't know if that will help. Also about air circulation, there's a little vent door at the top of the enclosure but I never really open it. Just trying to keep all the heat inside, enclosure is not air tight and there's a lot of gaps at bottom.