Thanks for the responses. Maybe I'll switch one group to Rep-cal with D3 and the other to Rep-cal without D3 and see what happens (I'll still use the D3 a couple times a month). The only vitamin supplement I use is Herptivite which does not contain vitamin D3. Maybe I'll pick up some vionite too and give it a try.
Cody, since herptivite contains beta-carotene, you don't have to worry about a vitamin A overdose if you also use carrots for your feeders. There is a very high threshold for beta-carotene, it is only converted to vitamin A as needed. In the cases where people have turned orange from massive doses, the color change was the only side effect. High levels of vitamin A will damage the liver, and cause birth defects, so using a supplement that contains beta-carotene instead is much safer.
-Alice
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