Tanks come in a variety of colours, sizes and shapes. The first thing to decide is whether the tank is going to be above or below ground, depending on how much space you have available. If you have ample space, above ground tanks are more cost effective.
The next thing to decide is what size tank you are going to install. This can range from a small 750 litre tank all the way to 20 000 litres, or more for commercial applications.