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i was wondering does it have to be unflavored geletin you use or can you use like grape or orange flavored

I would use the unflavored; it wouldn't have any sugar in it.

i gues that be ok but idk u can get suger free orange jelo

yea i have sugar free blueberry jello had it from when uncle was here he is diabetic so i bought some......just wondering what would the sugaR do to them

Sugar free means that it contains an artificial sweetener, along with whatever chemical mix makes the flavoring. I can't eat anything sugar free because I'm allergic to artificial sweeteners- there are a growing number of studies showing that they're not really healthy for you. So I wouldn't try it for my turtles as I have no idea what it would do. But for diabetics, yeah, limited options.

Turtles don't get a lot of sugar in their natural habitat, and especially not refined sugar. They'd probably have trouble digesting it, they have a slow metabolism and don't need a lot of quick energy the sugar would provide. Also, it would change the flavor of the jello shot from "yum tastes like fish and greens" to "sugary". Part of the purpose of the shots is to get them used to the flavor of more good for them greens by making it taste like fish and tricking them into acclimating.

Clarification- I wouldn't use a sugar-free and flavored, because I don't know what the chemical content would do to them. Regular ol' unflavored gelatin doesn't have any of that stuff and I did use it, with great success. My turtles swim away from me at feeding time when they get pellets, but they freak out on the glass trying to swim out to me on the weekends because they know that's turtle shot day.