This video shows a Wisy Vortex filter in action using a cut-away filter.
When the water first enters the Wisy Vortex filter it is diverted to the overflow. Most of the contaminants are rinsed from the roof during the start of a rain event. Diverting this First-Flush from the tank helps to improve the stored water quality.
After adequate time has been given for the initial rinse, the Vortex filter automatically – using centrifugal action – begins filtering the water down to 280 micron. The filters stainless steel diamond cuts, and vertical design highly oxygenates the water while filtering.
Video Credit: harvestrainwater