Rainwater tank over flow syphon or siphon comes with a screw-threaded union connector, making it simple to install in plastic tanks.
The siphon is to be recommended as an addition to a water storage tank because it skims floating pollen and smaller particles which are floating on the top layer of water. This continual cleansing prevents souring of the water and discolouration.
It also prevents any smell escaping from the tank and prevents rodents and other animal life getting in to the tank.
This regular overflow is important to get optimum water quality.