Definitely not using potting soil in the system. That's in pots next to it. The idea was to see how much faster the plants grow in the hydroponics than in the soil. The
nutrient solution is a three part, home-made one I picked up from a hydroponics shop in Cape Town. The owner showed me the kind of things he was growing and the concentrations he was using so I'm assuming it's good.
The
pump is a cheap thing from china I picked up at the garden shop. It pumps about 800 L/h which is not quite enough to give my five misters the pressure they need but it seems okay. They don't so much mist as they do spit.
Here are a few pictures