Pressure System

My plumber has a great apprentice - Brendon - who does great work. He came on Friday to install the Grundfos pump I bought to run the pressure system on our water tank. He has arranged two circuits for me: just toilet cisterns and one garden tap; and/or the rest of the house (although for the latter we need to up our tank size from 12000 to 36000 litres. That won't happen until next year.