So do the ducks!
It's been 4 days and the water is starting to get a bit smelly. I need to excavate out the hole a bit more so I can get a bucket under the valve and start watering my non-edibles with the poop.
I have to change my 3 big tubs 2 X a day !
The bigger they get, the messier they get !
What I need to do is make them a high water font, off the ground, just for water, far from the food & mud so they stop playing in & fouling their drinking water.
Ducks can get sick from having smelly, coliform-bacteria filled water.
See here:
http://www.permies.com/t/35468/ducks/keeping-ducks-water-fresh
One of the reasons we did not get a big 'pond-type' tub like you have, is that 1) it is difficult to empty & refresh 2 X a day, and 2) it uses ALOT of water and DH is always stressed out that me, my garden & my birds use TOO MUCH WATER as it is!
(We only have 4 wells running right now, so I am not worried, but he is !)
Our wells are shallow, in gravel runs in solid clay.
It rains here ALOT but most runs off.
So we store alot in tanks.
So, having a small bucket like the one shown in the bottom of that thread link, is what I aime to do.
We have several of these watering buckets already for our Cornish Meat birds & started birds.
It has a small float inside & water is replaced as used.
You can hook this kind of thing up to a garden hose, so they always have water.
The ducks will still get mud in the bucket, but at least they will not be contaminating it with poop & feathers.