I've tried using wheat berries (hard winter wheat), oats, and brown rice in grain jars. Wheat berries are the nicest - they grow fast and granulate easily to mix with substrate. Oats are a little stickier, much lighter by volume (less weight per jar), but work really nice as well. Brown rice grows really fast, but its just a mess for shaking (just sticks together). It seems grow so fast, the jars don't really need to be shook though, but the mass doesn't granulate well into the bulk grow medium.
Still not growing Liions Main - and that's what I started to do. Soon.
Here's my first contaminated grain jar - from agar. I've got 20 or so jars going from LC, no contams in any. I expect LC contam would be an all-or-none deal as the jars never need to be opened. I've done about 8 jars from agar - I think agar grows into the grain more aggressively than LC. LC inoculation is just plain easy, but needles are a pain. I think I like agar more. I expected the opposite.
Edited by LukeB, 13 January 2020 - 09:10 PM.