Not trying to sound prickish but my plants aren't even on week 2 and they are further ahead of yours, and i am using straight up boxes stacked together. In my experiences heat keeps the plants small and underdeveloped, with my first grow the temperatures were 90-95 and I had 3 week old plants that looked like yours, with my new setup and keeping the temperatures in the 70's my plants have been filling out like crazy. Get adequate ventilation and possible get the lights closer and start over.. then you will be in :hippy:..the money