I planted 53 "Creeping Thyme" plants this morning using my heat pad and Jiffy 7 peat pellets. I suppose technically I planted 150-200 ... the seeds are so tiny. Germination rate according to the package is 78% so we'll see. 14-21 days for germination, so I should have some plants in a couple weeks!
This is on my desk at work under a pair of fairly standard flourescent lights. Suitable for seed starting at least. Worked great last year for my peppers!
This is, by the way, one case where I chose to buy 1/8th of an ounce of seeds instead of one packet. A packet included about 200 seeds, while an eight of an ounce included around 18,000 seeds. I probably used 200 seeds to plant these 53 pellets because the seeds are so tiny. Hard to drop just one or two at a time. This way, I'll have plenty of seeds left if I don't get enough germination, and plenty of seeds that I can share with others who might want some thyme.