how long would it take me to fill up my pond if i have 3 gallon jugs and i can only take 1 at a time it takes me about 45 secconds to fill it up but it takes about 4 minites to get it from my sink out in the backyard to where my pond is, by the time i make it to the pond its only half full it takes me only about 15 secconds to dump it out into the pond so if i didnt rest untill it was full how long would it take to fill up a 300 gallon pond this way?