I dont flower until my plants reach at least 12 inches tall. Get more lights on your plants and move them 2 to 3 inches away from the top of your plants. They are stretching due to the light being too far away. If you are using cfls you can almost touch the plant with the light. More light equals bigger plants.

Dito on taking away the tin foil. I made that mistake on my first grow too. You will get what you put into your grow. You need proper lights and proper nutes to get healthy plants. Good luck.