I don't see why not.
Yes. Not too much thought ;)
First if you have not already got a tank, go to a pet store and ask for the right size tank for your turtle. Also while you are there get at least 2 or more bags of gravel. Plus get some sand too. fill the bottom of the tank with the gravel and put a large hill goring up with the sand so your turtle can have land. put some small logs and drift wood into the tank so your turtle can hide. also put some aquatic plants in to so if you forget to feed it he/she can eat the plants. plus get a filter. then put your turtle in and he/she can enjoy the tank.
YES, you can put a map turtle in the same tank with a slider.
Yes ofcourse you can have them in your saltwater aquarium. You have to provide some space in your tank with good sand and feeding sand dollars is easy, for they mostly eat suspended organic matters and other fish wastes.
you can put a turtle in a tank with no cover and it wont crawl out while you are sleeping
you can put fish in the tank but you can also put frogs in it too!
No. Unless you put it in a tank with sand.
no the big turtle would eat him
tee hee
If you are premixing the salt in a large container outside the tank, then put the sand in first. If you are going to mix the water and salt in the tank, then put the water in and mix it first, and then when its mixed put in the (rinsed!) sand. It will fog up, but that will go away.
put it in your backyard or a pond
smaller aqarium