GHost shrimp breeding in pond

[koi]

I have a heavily planted pond with lots of hornwort and anacharis.I have 4 2-3 in goldfish.3 8-10 in butterfly koi. They never pick at my anacharis and hornwort on the shelves.Im planning to stock with about 40-60 ghost shrimp. Will they breed enough to keep their numbers up?

[eddie]

my koi love ghost shrimp. they grow fast on them.