Water about 50 plants at a time by hand is getting to be to much for this old man,,,So asking some of you experts out there about this.. What I want to do is get about a 40gal. heavy duty trash can and put a pump in it with a hose hooked up to the pump and use the water wand to water with. Now my question is with me shutting the water off and on with the wand is there a special pump I would have to have...... Thanks in advance from broke-back