I agree that they are eggs, but of what I don't know?? I'm not sure I'd let them hatch in your DT if your unsure. If they are bad thats a lot of bad babies in your tank.
hmm..i was thinking, sponge. it's not in my tank. it was a photo sent from a friend asking me to id. the only info i have is that he said it's soft to the touch, and it's about the size of a quarter.
