Oddball: I know. That doesn't mean they get it through their shell, which was my point. Most high quality foods have calcium and Vitamin D3 supplements. And if you have turtles you should have basking areas with proper lighting (heat and UVB). So that is not really an issue. The point is that besides them chewing on it to keep their beak down or them swallowing it and therefore getting calcium from it, cuttlebones are useless. They can't do either of these with ti in the filter.
JEAE21: Don't worry about ReptoMin, it is not worth your money. Zoo Med is good though, as is Hagen NutraFin Max Turtle Gammarus Pellets, and others as well.
And those sulfa blocks are also a waste of money. They do not make a difference. And if you are keeping sulfur in your water all the time, when the turtles do get sick, the infection (whether fungal, bacterial, etc.) will be resistant to sulfur now. So it actually can make things harder for you and the turtle long term. What prevents infections? Clean water (lots of big water changes and lots of filtration).
JEAE21: Don't worry about ReptoMin, it is not worth your money. Zoo Med is good though, as is Hagen NutraFin Max Turtle Gammarus Pellets, and others as well.
And those sulfa blocks are also a waste of money. They do not make a difference. And if you are keeping sulfur in your water all the time, when the turtles do get sick, the infection (whether fungal, bacterial, etc.) will be resistant to sulfur now. So it actually can make things harder for you and the turtle long term. What prevents infections? Clean water (lots of big water changes and lots of filtration).