Hi, My water supply is from a well , straight to the house via a UV filter. The well is about a quarter of a mile up the hill so plenty of pressure. This will be our 1st summer here and I don't know if the well will always have sufficient water so I have got two 360 gallon tanks (plastic) and a pump to provide a backup supply. I cannot get inside the tanks as they are bottle-shaped and about 7ft high with only a 10 inch screw-on vent cap. One is fitted with a ballcock. I need to connect the two tanks together at/near the base so that they both fill and empty at the same time and thought of using screw-in tank connectors - but they require access to the inside which I haven't got. I spotted a cylinder connector at
tia, Ken