Seedling Party Update

We planted 14 plug trays of seedlings on 12-23-15 and we have some of the seeds already sprouting after 2 days.   Lettuce and brassicas (cabbage family) seedlings sprout very easily.      They are sprouted under grow lights and the trays are placed on a seedling heating mat set at 72 degrees which speeds up germination.  
Here are a couple pictures of them poking through the soil.