These beautiful garden fountains are made of glass fiber and reinforced concrete (GFRC) which is lightweight when compared to traditional concrete and they are more weather durable.  This material has fiberglass which withstands the cold and will not crack through, but like all concrete, some small surface fracture can show. All fountains are shipped with a parts bag. The basin lays on a level surface, put the pump cord through the hole in the basin and plug up the hole with the rubber plug provided.  For a more secure fit, clear silicone can be wiped around the plug.  On the ball fountains, simply connect the ball valve to the tubing in the fountain.  Fill the fountain three quarters full with water and plug in the pump.  Vinegar is used now and then to keep down the calcium build up in any fountain.