Year 2011 I started to build aquarium from reinforcement waterproof concrete. Dimensions are 600x170 cm and there is 100 cm water level. Tank volume is 9600 litres (2500 gallons). Front glass panel has 3,8 cm thickness with weight 580 kilos.
more pictures you will find here: http://www.numa.sk/en/our-offer/detail/mega-tank
more pictures you will find here: http://www.numa.sk/en/our-offer/detail/mega-tank