I have just bought one of these booster pumps todayI have just bought one of these booster pumps today Clarke CBM240E 1" Multi Stage 230V Booster Pump, i really need some advice on fittings, it has 1" inlets and outlets, as i would like to connect this between my pre filters and the 4040 membrane, which have standard hose pipe and hoselock connecters and i think the hose pipe is 15mm, i was wondering how to reduce the size, and it says on the instructions if you reduce the inlet to much it will affect performance, and may defeat the objective, So please could anyone help, and if you have used one of these how did you set it up, and if you did reduce the size to standard hosepipe fittings has it worked okay. Many thanks.,