I purchased my Brown Octopus from my LFS in August. About two weeks ago my Octopus stopped excepting food. I noticed yesterday that she was guarding her eggs.
What can I feed the babies when they hatch?
it's hard to tell from the photos, but are these fertilized eggs? You'll see dark eyespots within the eggs if they are. If they are clear, they may not be, and won't hatch.
Appears to be a small egg species, you might consider returning them to your LFS after they hatch, if you can. You'll see a recent note from @senda (and many other posts in this forum) that small egg hatchlings are notoriously very difficult to support in a home aquarium.