Final cleaning of the water before returning to the pond. Requires considerable 110mm pipework but is relatively easy to connect up. The pictures show the configuration of the pipes and by mounting two of the pipes on top the setup is more compact. The pictures were taken before the moving bed modules were installed as these were initially out of stock but arrived shortly afterwards. Having measured out the distance between all the modules there was no need to move the discharge module and pipework as it was in exactly the correct position and alignment.