Okay, I have "ReptoCal" which contains calcium and vitamin D3. Can I use this to dust the crickets for my leopard gecko? I remember for crested geckos, the calcium & vitamins should be in separate supplements. She's about 8-10 weeks old, should I dust everytime I feed her or every other feeding? Or once a month (as suggested by the guy who sold it to me - he said it's enough, since I'm gut-loading the crickets). And can I use the ReptoCal to put into a dish in the tank, or do I need to get a separate calcium only supplement? Thanks a lot everyone.