If your goal is to efficiently clean your tank in less time then Rotational spray devices solutions are the best option and here is why:
IT'S ALL ABOUT IMPACT
Impact, droplet size and spray coverage are critical to efficiently cleaning the entire surface area of a tank. The image below shows a static spray ball with a solid stream and a controlled rotating water head with a flat fan spray. The solid stream in the static spray ball is powerful however, due to its concentrated stream flow it only penetrates one area. The residual surface areas are cleaned by cascaded water wash, commonly known as shear stress.
The controlled rotating water head produces a flat fan spray and the droplets produced are larger and strike the tank wall at higher speed. The rotation allows the sprays to cover the entire surface area of the tank, unlike the static spray ball.