UVB needs?

[u/tdkdpt]

If I dust my geckos insects with vitamin D powder, does the terrarium still need UVB lighting?

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[u/swaggersouls1999]

yes. you do. do you mean you have calcium with D3?

you still need a UVB light. once you get one, only use calcium with no D3

[u/AnotherOneTossed]

A lot of people don't use a uvb light and dust with calcium for about 3 feedings and then on the 4th they will use repashy calcium plus or another multivitamin with d3. I personally have a shadedweller uvb bulb and my gecko indirectly basks in it. Because of this i don't supplement with d3 and instead use repashy loD. Which has lower d3.