I live in a shared house, but have a small shed thing I thought of getting a 60 litre RO tank, just for a few firstb floors I do. I only have a few bungalows on Sat at the moment and do ground traditionally. I am worried that if get a big RO system my landlord won't like the hose pipe going into my shed for hours and the waste coming out (he doesnt know I clean windows traditionally). I guess with 60 litres it shouldnt take too long just 2 hrs every 3 weeks. For my small round that should do. Anyone recommend a trolley system?