About a 20 gallon tank.
it depends if the turtle is small if its small it can live in small places example a small fish tank with some rocks in it a big turtle should live in a large tank with rocks in it
The turtles will eat the fish.
10 gallon
Yes unlike humans who change there environment to conform to them turtles change them selves
Depending on the species, one or two. Turtles will keep growing through their entire lives, overcrowding or expecting them to only grow to the size of the tank is something that usually leads to dead turtles.
Ideally a sea turtle should have a large saltwater tank with both water and land surfaces. The water should be regularly cleaned and changed out when too dirty. The tank should not be in direct sunlight. Sea turtles have a different diet than land turtles, and can include small bait fish that have been frozen or otherwise sterilized.
2-3 small hermies should go in a ten gallon tank but you should at least have a ten gallon tank for 1 hermie, you should think about getting some friends for it too.
I think you should ask the turtle how to check your spelling first.
You can just use regular water. In the summer/warm weather, I clean my turtles' tank outside with my hose. I also use faucet water. If you'd like to know how I specifically clean my turtles' tank, please contact me or reply to this answer.
a small cage, like a plastic fish tank with rocks
Adult frogs primarily eat insects, small fish, and other small invertebrates. While some larger frogs may occasionally consume small turtles, it is not a normal or recommended part of their diet. It is not advisable for adult frogs to eat baby turtles as their diets are not well-adapted for digesting reptile meat.
16 gal's small tank 20 gal's big tank