Spent an hour flushing it. Connected it all up. Started the water & off the pump went. Water went from 276 to 008ppm. Came out very quick but when put it through the DI it slowed down but only had to use 1 4.5 litre Di. Toyed with the idea of taking a chance of using 008ppm but thought no got all day so ran it through the DI. Took 5 hours to make 300 litres. With twin DI it took me that long to do 150 litres so well chuffed with it. Think it a be even better with an outside tap. My water pressure from my kitchen tap is not very good but overall was pleased. A big thank you to RC for recommending it & for all his help. Top bloke.