I worm mine the same as my chickens with Verm-X, I feed them the same as my chickens too - layers pellets, mixed grain, bread, vegetables, noodles, rice, worms, slugs. The pond you've given them is fine - you should be able to sex them at about 10 to 12 weeks, possibly earlier, by their voices, the girls will start to quack, and you need to stand and watch so you know which ones are quacking, the boys just make a pathetic squeaking noise
, and they start to lay about 6 months like chickens. The eggs are fantastic for baking! or eat tehm teh same as hens eggs