[quote=SoCoMMJ;2695519]I haven't seen 18 gallon Rubbermaid sized humidity domes anywhere.
So hit up your local drug store and pick up a humidifier.quote]
Get yourself one of the large ice cream cakes from Walmart, DQ, etc. and use the top for your humidity dome. You can actually use the whole thing as a propagation station if you use rockwool, Rapid Rooters, Jiffy peat expandable pellets, etc. Just follow your normal clone cutting & prep and put them under the dome on the bottom waterproof tray with a raised lip no less. Spray them a couple of times a day to keep the humidity higher.
And btw... Enjoy the ice cream cake.