I plan on growing my seedlings in the Greenhouse in much the same way that I grow them in my house. Each seed will be placed into a plastic or styrofaom container with holes in the bottom. The twist in my greenhouse is that each shelf will be capable of holding water, and on these shelves I will place the containers, hence the name “water tables”.
I built the frames with 2×4’s, I will then place plywood into the shelf to make the base. Next, a layer of yellow plastic (found it in the barn) will hold in the water, as shown below:
Above, you can see one of the “Water Tables” that I filled with water. I will add drains next, as well as a water source from the house, and an inside hose.