Paul I'm not sure on ritmos (never used one,) but can you not elevate a barrell on some pallets with a gekka fitting and valve near the base, and then run an hose to a cistern valve at the top so it's constantly on the fill as the machine draws from it
Didn't you buy a water pump in the package Camnz? I have seen Pikeyking use the barrel only method but it was conveniently 1m off the ground.
A water pump is a lot safer and buy a good one. Better still being in oz buy two so you have a back up.
if u stik ur kok in the bottom hole it sux u orf
whats the plug like on that mate