Any ting cheap and cheerful, along with BARF(still got a cheat freezer full of game ) . Although always give a good quality dry for the pups and I am using Gain puppy and sapling at the mo. Seems good ingredients, chicken meal being the first.
Off, day and night.
If lamping more than one, then only one off, saves the mistakes. Unless I'm lamping with others, then on slip.
Day time, depends on the way you like to hunt
Pellet ( high protein) when the water's warm. Wheat, Maize etc ( low protein) in cold water, in the winter.
I'm afraid if you want good results, you will have to do some research via Google