Installation errors will be avoided because of the fix height displacement in the overflow siphon therefore securing the function. Overflow siphon with a bilateral suction of the surface water inside the rainwater tank. No getting through of rodents. A connection fitting for the supporting tube is available.
How it works:
Dirt particles which are lighter than water (e. g. pollen) ascent and are swimming on the water surface. This swimming layer is removed through the special firmed overflow siphon when the tank is overflowed.