Seal the hole in one of the pots, glue them together with silicone caulk, Gorilla Glue, or another super glue, then bury like you would a regular olla.
Best of all, if you get your pots cheap enough, you save some money. In this case, the pots cost $1 each.
Next project is to develop a gravity fed watering system which can be supplied via city, well, or rain water.
