the first food I feed in spring is romet B to ward off aeromonas and other bacteria.
The DH Steve of the Goldfish Guru gives his fish a pint of high protein stuff for
their pond full of monster koi. about 60 of em. huge mouths. and the koi grow like
weeds. he feeds just once in the evening so they dont swim it off I guess.
I think I am overfeeding mine. Ingrid