Incidentally, what I use for my domes is a 'cup in a cup.' I find that 1Qt/L plastic tubs of yogurt with an inverted clear plastic 1Qt/L take out container works great for the outer part. Then, inside that I put a smaller cup, I use clear 9oz solo cups, that house my media and the cut itself.
A little mini greenhouse. Works great.
A little mini greenhouse. Works great.