Does freezing kill all pathogens?

[Paul Sands]

So you're saying it's safe to feed these to my fish? I only care about ich, velvet, etc that will harm my fish. I want bacterial diversity in my tank.

I know of no study that shows that ich velvet or brook would survive freezing. You might want to keep them frozen for a week or two before using.

FWIW, I feed my anemone frozen shrimp all the time and I’ve never had anything happen from that.