Recently I've finally had the time to hatch bbs for my fish. However, after many failed attempts where none of the eggs hatched at all, I've come to the conclusion that my eggs are too old/were not kept properly. After researching online, I found out that I'm supposed to keep them in the freezer after opening. I haven't been doing that and now I have a whole tin of unused bbs eggs. What can i do with them? Can they just be fed as is?