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Round Tanks vs. Square Tanks

Maintenance & Tank Life

Round TanksSquare Tanks
They are easier to inspect, paint and maintain as they are sat upon raised feet The entire base is close to the ground which makes it impossible to inspect and repaint
The tank is not in near or direct contact with the ground They rust from the ground up unnoticed
Water will run off a round tankWater will “sit” on top of a square tank causing rust spots to form

Bacteria & Condensation Issues

Round TanksSquare Tanks
There is an air gap between the inner and outer of a round tank which helps reduce condensation and improve security Square tanks often have common tops (single skin) which causes more condensation and also compromises security
These tanks have a smaller base which will help to prevent condensation build up These tanks have a flat base which means water from condensation will eventually fill the base of the tank
Bulk round tanks can be manufactured with a slightly sloping base. This means all water can be extracted at one end Some square tanks are manufactured with a suction point at one end. This WILL NOT remove all the water & sludge from the base or corners of the tank
Round tanks do not have corners for the bacteria to grow inCondensation and water in the corners of the tank will eventually grow bacteria. This in turn can clog filters and damage equipment

Other features

Round TanksSquare Tanks
The round tanks are fitted with strengthened lifting points They are difficult to lift and move and will often need to be strengthened
A round tank has one main weld seam which means less opportunity for the tank to leak A square tank has more weld seams due to the shape. This presents more opportunities for leaks