Pond Boss Forums Thread Like Summary - Bloodworms

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.

Not sure my opinion means much but I do have a koi pond with a very large pressure filter. I only have to clean it 3 or 4 times a year but when I do it is full of little red worms in all of the sponges. I looked it up once upon a time and if I remember right it is completely harmless. Probably due to all the stuff my daughter and I throw in there. We have an albino channel cat that is 9 years old, 1 lone pumpkinseed sunfish, 1 koi that is also 9 years old, numerous goldfish of all the fancy and not so fancy varieties, 1 turtle, and about 15 tilapia. When we harvest rabbits and quail, we throw the hearts and pieces of lungs in to the turtle and catfish.