Water re-cycling

One of three 1000 litre IBC tanks collecting rainwater from the roofs (one good days rain will fill the tanks!)
 

The rainwater can be used to water the polytunnel via 'leaky pipes' or to provide a flow of water through the pond (along with the cleaned grey water from the reed bed)

The tanks were bought from EBay for £20 each plus carriage costs (I hired a van to collect them, it cost me £140 to collect five)
I plan to clad the tanks in (recycled) shiplap to block out the ultra violet from the sun which will destroy the plastic otherwise.
We are also planning a rainwater store to flush the toilet, this will need a second ball cock fitted so that mains water can be used when there is no stored rainwater (we live in the driest area of Britain