I like this.
Amazon.com : Jiffy 5262 Self Watering Professional Greenhouse 70-Plant Starter Kit : Plant Germination Kits : Patio, Lawn & Garden
www.amazon.com
This is the self watering model, has only 70 spaces so two corner spaces can be used for filling with water. I get the pucks good and saturated, sprinkle a few dozen seeds onto a sheet of paper, and slide it around to spread the seeds out. Then with the dampened point of a bamboo skewer I transfer three seeds to each puck, one at a time, transferring them to the top of the puck, without burying them. I use a magnifying glass to better see what I am doing. It sounds slower than Sleepy Joe but the process actually goes pretty quick. Then I put the plastic cover on, set the tray in front of a floor to ceiling window in my living room, and check in 48 hours. 72. 84. By then there are usually some little teeny sproutlets. I let all three grow as they will and when there are four leaves on each seedling, I cull them down to one on each puck. The top holds the moisture in while letting in light. When the seedlings outgrow the 36mm puck, I plant puck and all into a recycled nursery pot or a red solo party cup with a couple of holes poked in it for drainage, filled with garden soil. By this time, the plants are mostly staying outside, and getting daily watering with a mister nozzle. I have also planted the pucks right into the garden. I live in the city and so fewer animals to eat the tender seedlings. Possums, coons, squirrels, dogs, cats, don't bother tobacco plants.
With this system I get an excellent germination rate, and it is rare for a puck to need reseeding. Works great for a small operation with only 100 or 200 plants. Or less. Probably not practical for a commercial operation but it does great for me. The 36mm pucks can be bought to refill the tray, at Lowe's or on Amazon. There are three sizes and 36mm is the smallest. That's not quite an inch and a half diameter.
Self watering is maybe stretching the truth a bit. The bottom tray has a wicking mat that goes under the inner tray, and the peat moss pucks suck it right up from the mat. I can go several days without refilling, but you do have to refill occasionally. The non self watering type can still be watered from the bottom, made easier by removing a few pucks to make a place to pour water without disturbing seeds or seedlings on top of the pucks.