You're right about the Autopot mods. I drilled 1.75 inch holes through the pots and then used 5 gallon Roots fabric pots as a liner. You could make them cheaper with landscaping fabric but I was in a hurry and didn't wanna deal with that.
Just to be clear, this is what I mean by Autopots http://www.autopot.co.uk/watering-sy...t-systems-kits
I feel like we may be talking about different things when we say Autopot.