Grow plants in low light condition

My family live in a small appartment. We have quite much sunlight in the day but somehow, plants cant grow as fast and strong as they do in gardens. We have been looking for a methods for this for a long time. This video's an amazing solution. These versions're beautiful and especially, they work! I wish I could do a research on this right now = = but the BIG exam's coming up:-< So I put this in my wishlist, and plan tag also. Really want to come back with this soon.

How beautiful it'd be when we have a window farm system!