Pamela, why do you want more heat, is it colder than normal room temperature where those plants are?
I looked up the "Spot-Gro" and from what I found, which wasn't much, it is a tinted regular incandescent bulb designed to enhance the appearance of the plants (make them look more green) rather than to provide them with light for photosynthesis. If that's truly the case then it wouldn't be adequate even if it was closer to the plants, it's not a grow light. What does it say on the side of the box, if you still have it?
