Not sure if this is the right forum but it's about food anyway. I have a new ornamental pond that I've added 10 goldfish to & am feeding them a variety of things based on my Google research. One of their favorite things is bloodworms which I've been getting frozen & feeding.

I went to change the filter in one of my pumps today & discovered that all 3 layers of filters were squirming with live bloodworms. Hundreds of them. ??? So they came back to life after being frozen & reproduced? I dipped the filters in the pond & the fish as well as my baby bullfrog had a feeding frenzy.

It's interesting but sorta disgusting. lol Wondering if I can start growing my own from frozen. Sure would be cheaper. Any ideas?

TIA.