This How to Video will show you the steps in preparing the for your new poly rainwater tank. You have made a wise decision to install a water tank. A water tank will ensure your future water security. Whether your tank is for your home, garden or for stock, the preparation of the site and the base that the will sit on is critical. To be effective your new tank must structurally secure on a solid base. There are a number considerations that you need to look at. This video goes through - step by step - what you need to think about when preparing the base or site for the installation of your tank.