Welcome to Geckos Unlimited! :cheer: in prepping now, so you're ready for your new friend.
What brand of calcium with D3 and plain calcium have you now?
Depending upon the age and health of your leo, keeping plain calcium in the enclosure 24/7 is
not a good idea.
Calcium with D3 products and multivitamins are
not created equally! Some products contain way too much vitamin D3 and other products are too high in other ingredients. That's very confusing.
Some people like Repashy's Calcium Plus multivitamins.
I like and use both these Zoo Med supplements:
Zoo Med's Repti Calcium with D3 and
Zoo Med's ReptiVite multivitamins without D3.
Most of a gecko's nutrition should come from the diet you feed the feeders. Consider powdered supplements necessary. Just very lightly dust with them.
I've created 2-3 Feeding & Supplement Schedules depending upon the age of your new leo. Please click my Leo Caresheet at the bottom of my signature and scroll to posts 124, 125, and 126. Follow the numbers on the left side of those posts.
That caresheet is chock full of other helpful suggestions. If you find it too long, just scroll to the parts you're looking for and come back soon.