I'll explain a litte background so you understand the WHY behind it all. It'll make more sense than just listing another schedule.
- You want to use calcium WITHOUT phosphorous or D3 at most feedings for a couple reasons. 1. The body works best with a calcium to phosphorous ratio of about 2:1. However, crickets and other feeders have a lot more phosphorous than calcium (1:3!), so we need to correct for this by dusting with calcium. And 2. D3 is easy to overdose on via diet, you always want to rely more on a good UVB bulb/sunshine over supplements which should always just fill in little gaps. If you were to give D3 every day (depending on the brand) it's more likely to lead to health problems.
- But you do want some D3, to fill in any gaps, like I said. So dusting with it lightly a couple times a month or so is usually sufficient to make up for any possible shortage in the body but not be too much that it causes problems.
- Then you also want a multivitamin (which can include D3, in my opinion, so you can do an all-in-one type thing) to also fill in any gaps in nutrition. A good gutload is important (what you feed your bugs) and a multivitamin a couple times a month or so will help round out the diet.
Let me know if anything doesn't make sense. But that's why we usually recommend plain calcium at most feedings and D3/multivitamins a couple times a month.