To conserve the municipal water used on our flowers, shrubs, and tomato plants, we installed an easy-to-manipulate 150-gallon heavy plastic farm-type stock-watering tank underneath our back deck where it became a hidden rain barrel. We drew the downspout-collected rain water from it with a small portable electric sump-pump having a garden hose attached to its outlet. During the manual watering of our plants, we controlled the flow with an adjustable nozzle at the outer end of the…