Next to the Kijito we wanted to experiment with the diesel powered pump to see how far we could drill into the ground with just water flow. The reason was, to test a claim of some companies that they could drill a deep enough hole with this method for a ground loop used in ground source heat pumps. With our setup we were able to go approximately 10 meters into the ground when we hit an impenetrable ground layer. This depth would be sufficient for some (low efficiency) heat pumps and with this method it would be able to be done cheaper and less work intensive than current methods that use specialized drills. It is important to recognize that this would only work in the sandy ground in the Netherlands, as there are not much impenetrable rocks in the way

On the Saturday of the working weekend a lot of progress was made on the hydroponics system. This day the IBC tank was bought and brought to the WOT to create housing for the worms and store fertilized water. But first, in order to install the tank a firm structure was to be built to keep the tank from bending. So the path in the greenhouse was dug out further to create a wall of earth for the lower part of the ibc to be reinforced. Meanwhile supports for the sides of the path in the greenhouse were made from pallets and installed. Together with steps going into the greenhouse.