Advertisement This time last year I had over 1000 Ivory babies and they've done it again. Last year I had a terrible die off. I think the substrate was depleted, I was just inexperienced and had no idea how much they could eat. So this time, I have already moved 300 to another enclosure with fresh substrate. I'll likely set up a few more enclosures as the rest grow. The babies are about 1/8 - 1/4" long, so very young. Not sure how many adult females are in there, 20 maybe more. These are happy millipedes! Compared to Narceus, they are very slow growing. I had some N. americanus hatch in June and they are already 1/2" long. That's a lot faster than my Ivories have grown.