Got a 165 gallon pond for my 3 ducks last summer and to renew their water, I would use buckets of water to empty the pond out. It's not working out for me, my back was killing me. This summer I'm planning on doing a drainage for them but how ? What sort of drainage do you all use ? I'm a picture and learn kind of gal, so if anyone has pic's, it will be greatly appriciated. Thank you