The Prime Vortex, which is
now probably the most popular unit that is used today and has been
used as part of the main filtration system now for many years.
A Single Vortex unit, used as Primary chamber, fits into the
filtration system as the 'First Line of Attack' ... and should be
placed at the front end of the filtration system .. Normally the
water from the bottom of the pond - together with waste and other
debris is fed directly into this via the 4" or 110mm pipe from the
Bottom Drain where it then adopts a 'spiral' motion inside the
This allows the waste and debris to settle into the bottom of the
vortex chamber where it then collects at the conical end of the
vortex - waiting to be 'Flushed' via the Slide Valve which should be
fitted to the external pipework that has been installed as part of
the filtration system ...