a33272 said in a different post that he liked the idea of my grass in the vivs. I've posted it before, but can't find where, so I'll do it again.
Anyways, what i do is stick some compost and soil mix in the oven for about an hour at 200 degrees. When it's cooled down (about 2 hours after) i put it into trays and sprinkle grass seed on top and keep it either on my kitchen window ledge or ontop of the vivs, anywhere that it's warm really.