Consumers need storage tanks for three main reasons: to store petroleum/fuel products, chemicals or water.
The material to be stored determines the type of tank needed. Petroleum cannot be stored in plastic and some chemicals cannot be stored in metal. There are also regulations regarding the storage of petroleum products.
Once the dealer knows what kind and how much material the consumer wants to store, they can recommend the size and type of tank needed.
-- Tips courtesy of HomeAdvisor.com