im new to chameleon so im not sure but i just have calcium powder thing i dust my crickets once a day and aroun 10 crickets per meal 3 times a day. so i dust 10 crickets a day
You aren't including your multi vitamin with everyday dustings right? And for the dusting you should be using the PLAIN calcium WITHOUT D3 at every feeding, then most forum members with a bit more experience than myself recommend that you do your multivitamins and D3 dusting twice a month some sort of schedule like the 1st and 15th of every month
The white dust around the nose is harmless. If it bothers you, you can reduce the amount of calcium you use a bit. Note that you are just reducing, not eliminating. Try dusting half the crickets for awhile and see if that helps.