I didn't even get that far in the vid....I stopped watching after seeing the overstocking in that run. Then I got to thinking how his elaborate system empties the dirty water where? Yep, right in the wet, poopy run. Let's create a complicated design to drain our duck tub....and add to the slime in our overstocked run. Yeah!
That's the ticket!!!
Only a man would come up with that idea...sorry, fellas, but my mother and I both use that expression whenever we see the most impractical designs being built and implemented out there. Guys just like to do "stuff"...... but it's the rare guy that does practical, workable stuff.
If his waterers were not implementing the poultry nipples, he's missing another wise idea. Why not drain that tub out into the grass or garden? Why not use electronetting to create movable paddocks for these ducks? He could even put that tub on wheels and pull it along after draining. As for water...you can bet those ducks are just drinking out of the tub most of the time anyway. Why not feed whole grains via a turkey feeder that casts the grain out on a timed schedule so that the ducks can feed naturally and they aren't bunched up at a tiny feeder...then offer a free feed mineral supplement such as kelp meal. If that is not an option and just feeding up some meat ducks is the goal....why not a trough style feeder so they can all get a fair share without trampling one another?
So many questions but the first and foremost would be "WHY are you overstocking?????"