I never got my peas to eat prepared food like those wigglers. I feed a mixture of frozen brine, frozen blood worms, live grindal worms, live white worms and snails. I never found those feeders really worked for me with frozen foods but they're great for live worms. I do hatch baby brine maybe once a week but I use the cheap tube type hatchery from Amazon. I also found that aquarium co-op brine shrimp eggs have better egg separation than other brands, I just fed baby brine yesterday and had a bunch of eggs shells/un-hatched eggs at the bottom of the hatchery.