I'm using 21x10 trays. I guess I'll be growing it inside. I've got my first tray sitting in the garage right now. I plan on moving it inside when it's time to expose it to sun light.
Where can I get my hands on that shelf/cover you're using for your wheatgrass?
How long do you soak your seeds for and do you plant them right after soaking? I've read that the seeds should be planted right after soaking and I've also read that they should be left in a sprout bag for a couple days after soaking. The batch I've got going now soaked for about eight hours and then I planted them.