How to build a rainwater tank system from IBCs?

[Miek]

I use a pressure set pump to power my garden hose from an IBC storage tank, works great. You just turn on the tap and the pump kicks in once the pressure drops, no manual switching required. I went with a 1kw motor and its good and powerful, I wouldn't go below 750w if it was me as the flow isn't good enough (IMO), but I have a biggish polytunnel to water. Obviously make sure it's well frost protected.

The only downside is if someone leaves the tap on and the system runs dry, then there  is nothing to stop the pump running until you switch it off electrically.