While the water was still being drained David placed the bottom drain and black plastic liner with wire mesh in position.

The black plastic helped to keep the ground water away from the wet concrete that was going to be poured on top of the black plastic. But unfortunately it did not help to keep rain water out.

 The wire mesh gave the concrete more grip. I was worried that the sides of the pond would collapse under the weight of the concrete so I bought reinforced steel mesh and placed it on the sides of the pond.

The image on the right shows David busy laying the concrete foundation of the pond. The floor and side of the pond is 10 - 15 cm thick.
Because we had such a big water problem i bought water sealer and david mixed it into all the concrete and plaster. This helped to make the concrete water resistant.

We used 16 bags of cement, 2 ton building sand, 1 ton building stone, 20 litres of cement sealer, 15 meters wire mesh and 10 meters reinforced steel.