water reservoir watering wand/pump??

i recently set up a 40 gal tank to keep as a water reservoir. i put a small bubbler in the bottom to keep the water moving and oxygenated. ive been looking online for something to use as a watering wand. something that i can either manually pump or a pump that i can put in an can be controlled with a trigger or something. im not sure where to find something like this. any help would be appreciated.

im thinking of putting a submersible pump on the bottom, hooked to a hose with a triggered watering wand. would have to plug it in and unplug it each time you use it, but it would work. no one else seems to have any ideas............

just do a basic flood drain system.its cheap and u usually dnt have mess with it. put the pump on a timer.