I use pelleted bedding..just a thin layer of it, it absorbs the water (thak-you to the creator of woody pet!) And gets nice n fluffy for them to sit on...and its easy to scoop the top layer of droppings off without having to change the whole thing!
For their food, I bought one of the metal feeder pans and suspend it with coat hangers bent properly. For water I use dishes that dont get dumped easily...goat feed pans seem to work best! I have 9 ducklings right now, and have four pekins (3 f, 1 m) and none had the smell issue or attack problems mentioned here.
I do have an agressive blue swedish drake..he chases off everything, including my great dane! thje tricky thing is, he is only 9-10 weeks old !!!
I also have a couple runner drakes that chase everything off of what they beleive belongs to them...usually female ducks, but there's one that like my 8 week old buff orp pullet, too.
I think the agression is more a drake thing than a breed thing...but thats just MHO.
For the smell and wet problem...try pelleted bedding..it is a work saver! $6 at
TSC and it will last a month for up to a dozen ducklings.