yep thats same as the one i just sold, i would put it after the three vertical filter canisters as they are all connected together, just connect up the hose before it goes into the other horizontal filters/membranes whatever they are - either way it can still pump and suck, and should work well there...
i dont think that pump is designed for 24 7 useage, so let us know how quick it will fill a 1000ltr ibc..
thanks