Aiptasia LOVE live baby brine shrimp. If you have Aiptasia you don’t want, I don’t recommend feeding it.
I tried a bunch of ways of hatching them, the best by far was:
Ziss hatchery
Ziss makes the best brine shrimp hatchery on the market because of its strong, impact-resistant plastic and ability to run a heater and thermometer inside.
www.aquariumcoop.com
Aquarium Co-op eggs (these eggs specifically)
Grow fish fry big and healthy by feeding live baby brine shrimp. Our eggs have a high 90% hatch rate with easy separation. Add water, salt & air to hatch.
www.aquariumcoop.com
With a small heater like:
Mini air pump. Light optional.