Evolution Aqua filter media has been independently tested by IFTS (Institut de la Filtration et des Techniques Séparatives).

The locations affected include but are not limited to Northern Ireland, Scottish Highlands and island locations such as Isle of Man. When Evolution Aqua brought out the new Kplus media which is a better form of K1 media, they brought a sinking version out and we thought we would test in a 3-tier shower unit and run from the skimmer line. Designed to be used in conjunction with most filtration systems, the Tempest offers additional mechanical and biological filtration. They can be used with ANY filter as long as there is water pumping through the Tempest, they are pressurised so they can go up, down…left or right. Easy to clean: With the pump turned off, slide valves closed, and waste valve open, air is drawn into the filter.The Tempest filter is an innovative polishing system for ponds that will help to deliver crystal clear, healthy water.

We will not accept any liability for the delays caused by third party contractors waiting for goods to be delivered.It is possible to unscrew the waste valve assembly at the bottom of the filter once the pump is turned off and the filter has been emptied during a cleaning cycle. This is from a skimmer line so its the surface waste that's getting through, the pond is really clear.