We are pleased to introduce Tankmasta's new generation of underground tanks, affectionately referred to as the Donut (3000lt) and the Bagel (5000lt).

Born from the industry's need for an underground tank that is structurally strong, resistant to hydrostatic lift and easy to install, Tankmasta's toroid tanks are a fresh approach to underground water storage.

Designed to exceed the requirements of AS1546.1, both the Donut and the Bagel have been F.E.A. tested to a Specific Gravity of 2.1 and a vertical load of 5kN.
With a maximum height of 1300mm, excavation is kept to a minimum and allows both tanks to comply with Workcover regulations for working at depth.

While the tanks toroid shape provides super strong construction, it is the tanks unique patented rib design that allows both the Donut and the Bagel to be incorporated into driveways and garage floors.