Good idea! I may try that, especially if I continue hatching triops in the future. Thanks for the advice. I never keep aquatic pets so this is all new to me. CharlieDog, I haven't been able to physically see an egg sac yet. Some folks on the triops forum have some good shots. I'll try and get one when I spot an egg sac! ETA: In the meantime, this DeviantArt photo collage shows a triop with an egg sac! http://www.deviantart.com/art/My-triops-74702373 The laid eggs don't hatch until they've been completely dried out, then re-hydrated. So I can wait until the triops die out, then sift the eggs when I clean out the tank. Then you can either wait for them to dry completely, or freeze them for a few days to simulate a winter. Then you can start all over again if you want!