I am not familiar with Nutrabol. Is it a calcium product? If so does it contain D3?
Most keepers lightly dust feeders with
Calcium wihtout D3 every day
Calcium with D3 twice a month
Herpivite twice a month....
Or you can use Repashy all in one every day to make it easier to remember what you need on what day.
Gutloading with fresh vegetable and Dino Fuel are a good thing in my opinion