Pretty much similar as to heat requirements, needing food and water, keeping the bedding dry. With that being said, plan for a few changes:
I recommend a waterer made out of a cottage cheese or Cool Whip container with an oval cut into the lid. This allows the ducklings to get their heads into the water to clear their nares (nostrils) but not splash ALL of it all over the brooder. Something like this:
Also, place that waterer on a low edged plastic or metal tray (maybe a small cookie tray?) on top of the bedding. That way, any spills will stay in the tray instead of get into the bedding AS FAST.
Get some powdered Brewer's yeast to add some to their feed (if you're using chick starter) because they need more niacin than do chicks.
Ducklings grow much more rapidly than do chicks. They put their growing into body bulk, not feathers, at first. They will get really big but still have their ducky fuzz for quite some time. Chicks feather out really quickly, but ducklings do not.
Give them little swim dates in WARM water only a couple of inches deep and a way to get out of it. A paint tray, which has those raised bits and is graduated in depth is perfect for the first few swims. When they get tired, and they will very quickly, take them out, dry them off, and put them directly under the brooder heat.
Hope this helps!!