Filling HLT/all-in-one from garden hose

[Hop_it]

That is exactly my plan, but I'll be using MDPE pipe 750mm below the garden. There's a pointless garden tap at the back of our house, about 6m from the garage, so I'll basically divert that to the garage. This will be done in all the spare time I have

A perfect solution. Blue MDPE is made for the job