Box for filter is built, connecting pipes this afternoon, will have bottom drain - to settlement chamber - 1st filter box 800l - 2nd filter box 800l then pump, to gravel filter and then back into pond. Both filter boxes are stacked with Terbo-Pac from Terbo Plastics (http://www.terboplastics.co.za/index.htm).
What comes out into the pond should then be very clos to pure "Bon Aqua"
Should be operational by Saturday lunch