Good choice of ducks! They are all in the same weight class, my light-weight Indian Runners are a bit afraid of the White Layer "tanks"

- but hey it's their own fault, they were nasty to the new ducks first, now they get their payback…
I had Cayugas on my list too, i love their beetle-green feathers and would enjoy some black eggs, but my wife doesn't like black ducks.
Congtratulations! You may have found the only farm store in the country with caring employees. Just got back from town and saw dying turkey chicks in one of the stock tanks. Empty waterers, empty feeders and it was almost closing time.
My ducklings outgrew their kiddie pool brooder after two weeks, but that was mostly because of having 14 (fourteen) ducklings at once. I have a
Google-spreadsheet in which you can see how fast the ducklings gained weight.
They spent another two weeks in the garage card-board and tarp brooder - easy to build if you need one, just look into the
spring-duckling's album.
Finally they spent another 1½ weeks in a little duck-house with patio before i released them in the middle of a heavy snowfall, just at an age of 5½ weeks:
I'm sure you will have a lot of fun with your duckies. Enjoy every moment! They grow so terrible fast, before you know they quack. And please let us participate, we all love pictures and videos from sweet little ducklings…