There is a very good chance that the eggs are fertile and you will probably see hatchlings in about 2 weeks. If my guess is correct, this is a "small egg" species and the hatchlings will be pelagic (living in the water column for a period of time vs benthic, surviving in/on the substrate) Sadly, we have not cracked the success code for raising pelagic hatchlings (we barely have success with the larger, immediately benthic species). We think the biggest problem is offering the right food at the right time. They will eat brine shrimp but there is not enough nutrition to sustain them. If you want to attempt to raise them, you might try keeping a constant supply of live mysis (this gets expensive fast and there is almost no hope of success but is a food used for successfully raising newly hatched cuttlefish) in the tank. I have found that the mysis survive (high mortality is part of the expense) well on frozen daphnia.