How do I go about putting a smaller turtle into a tank with a bigger turtle?

Donut (my main turtle) isn't huge, but his shell is about the size of a female's palm %26amp; my new turtle Dunkin is about the size of a quarter. They are Sliders. I know right now there is no way I can put them together, but I was wondering how I could make the process easy on the both of them. ..I don't think Donut is too excited about the new addition, though Dunkin seems like he wants to be around him. Ideas %26amp; suggestions welcomed :)

How do I go about putting a smaller turtle into a tank with a bigger turtle?
i got a red eared slider last summer thats about 4.5in. and a month later my friend gave me a 2inch baby painted turtle and i put the painted turtle with the red eared slider and thy were perfectlet fine the baby will even ride on the bigger ones shell (i have a 55 gallon tank so im not sure if that is an impact on how they treat each other)
Reply:If both have plenty of room, this would not usually be a problem. The thing is, most people will not give them as much room as they would need.





The rule of thumb is about 10 gallons of actual water per inch of shell length. If your turtles add up to about 6" long, they need about 60 gallons of water- or about a 100 gallon tank mostly filled.





The kicker is you need to think of the future- they are going to grow rather rapidly for the next few years, no matter what the tank size is, and when they feel crowded, they will fight and the smallest will usually be injured.





Red-ears are big turtles- males hit 9", females up to 12", so in theory you could need over 200 gallons of water before this is all done.
Reply:my family owns a turtle farm - we have millions of turtles (about 90% of them are sliders)- but in our gift shop we have a tank that we just throw baby turtles (that we may find around our farm) of all shapes, species and sizes in they never bother each other or even notice each other



Nanny