Hi - you'll find a number of recommendations (and a few "forget these") over on the Growing from Seed forum here. Lots of great FAQ's and many discussions on using heating pads, best seed starting mixes, light set-ups, and much more.

Hope this helps.

Dave

Here is a link that might be useful: Growing from Seed forum

I start my seeds in heated room in my basement using shop lights. Tomato seeds for instance like a warm environment for germination 70-75.