Posted: Sat Sep 22, 2012 12:40 am Re: How long turtle need sunbathing?
As much as they want, and on their schedule. Limit their access to sunlight or simulated sunlight (UVA+UVB) lights. to the natural daytime cycle, 12hours on, 12 hours off, or whatever diurnal schedule you want, but keep it consistent. I use a timer on the basking lights for this.
Turtles sunbathe for two reasons: 1. to regulate their internal temperature. 2. to get UVB rays that activate vitamin D factories in their cells. The vitamin D allows them to process and absorb calcium so they can grow.
They will eat calcium and food and sunbathe as needed and as available to grow and regulate their temperature. It's more important for them to be abe to regulate their temperature, so it's best to have the water temperature at around 72 -84 and the basking temp 10-15 degrees higher.
Calcium is usually added by giving them access to a cuttle bone with the backing stripped off so they can take bites of it. Have you noticed that turtles have 'beaks'? Which may need some kind of artificial wear to keep in shape... Personally I don't think that eating pellets matches the abuse that their mandibles would get in the wild.
5 inch RES male named Jordtim
Hardware: 75 gallon tank (21"H X 48"W X 18"D), FX5 filter with veipacray media setup, pool filter sand substrat, TurtleSafe halogen heat/UVA lamp and ReptiGlo 5.0 UVB lamp in ZooMed Dual Dome Fixture.