Hi CallUm. Personally I use Komodo cricket dust daily and nutrabol every two weeks. Any plain calcium will be fine as long as it is phosphorous free. It gets confusing when you start to introduce different feeders. IE on the days I feed silk worms I don't dust at all. Silkworms are high in calcium. A lot of our members live in hot countries and their chams are outside for long periods therefore they don't need the same amount of d3. If you are happy with this schedule use it till you learn more. I would advise you check out Sandrachameleon blogs. She is a wealth of knowledge and I try to stick to her recomeddations. You will find several threads on here just now about this subject which can be confusing. The above is what many advocate and will be fine for you.