Are there any vitamin supplements for PDFs that will help with egg fertility? Something for dusting the FF with at feeding time would work best. I have a pair of Azureus that recently laid a clutch of 6 eggs that hatched successfully. The last clutch was 5 eggs and only 2 hatched. I know this can be common for Azureus, but I would like to see if there is anything that I can do to help. I already dust the FF with Rep-cal's Phosphorous Free Calcium with Vitamin D3 and Herpative Multivitamins Advanced Formula. I usually add about a pinch of each for dusting.