What kind of light did you use? How would you think cucumbers would do in a room about 52-54 degrees? A lamp might raise the temps a few degrees. With my expansion project, this idea has potential. I could potentially start them in the basement about the first of May and then move tomatoes and cucumbers to an outdoor greenhouse in early June after the last freeze. Then they would have 18 plus hours a day of sunlight, and in a greenhouse, the temps should be above 80 most days.I grew cucumbers over the winter in the basement and got a few, but the plants grew well in small (3 gallon) buckets. So I planted 4 hanging flower containers with Cucumbers, they are hanging above my tomatoes and are loaded with tiny fruit. I also grew some tomatoes in the house and we got a about a dozen, I think I chose the wrong tomato. I will try again with starting indoor tomatoes and cucumbers between now and August.