Building your own tank

Big tanks

This is a different story. There can be really big money to save here. I paid less for my 2200 litres (581G) tank than I would have to pay for a 900 (238G) litres tank in the shop. Where I live you don't get a quantity discount on litres of water. In fact the cost per litre increases with tank size. This is because big tanks are often custom designs where you hire handcrafters to build, modify or install the tank for you. That just makes the price explode. The market is also totally different. Generally the people who buy large tanks are in a very good situation economically. Price is not a problem. In fact many of them like the fact that it is very expensive, because it makes their systems exclusive. If you build on your own you do get a volume discount. You don't have to hire expensive labour and you can use better and much cheaper materials. 

Find out more on...http://www.jonolavsakvarium.com/eng_diy/2200litre/2200litres.html