you can make home made airdomes very easily. im sure im not the only person to do this, turn a 3inch net pot upside down, cut a whole in the bottom of the pot you are using, sit the 3inch net cup upside down in the bottom of the pot with the lip of the netcup on the outside of the pot, underneath your pot as to hold the netcup still. use a two inch airstone and set it inside the upside down netcup, run your airline any way you want to and there you go. I have a Jock Horror by Nirvana about 3 weeks old in a home made autopot, using a 7gallon smart pot, i put 3 inches of hydroton in the bottom, then fill the rest with chunky perlite and medium size aquarium gravel at a 50/50 ratio. sit this smart pot inside a ten gallon storage tote, it should fit pretty snugly but not tight. Then add water until it is 3 and a half inches deep. ive been making autopots like this for five years and they have always worked great.
