Take your turtle to a qualified reptile or exotic vet.
Short answer: no. If your turtle's skin is swollen and bulging out of the shell, it is probably due to the fact that the turtle is not spending enough time out of water. A turtle does not live solely in water. Forcing it to constantly live in an aquatic environment causes the body to fill with moisture, causing it to swell. Give it sunlight and time to roam outside every day.
If your turtle is a water turtle it should.
ONLY USE COLD WATER for a swollen eyelid. Hot water stimulates the cells and makes it more swollen.
Yes, whenever you are traveling with a turtle, you should put it in a container that contains water.
No. the ammonia levels for fish water are different than in turtle water and are meant for larger quantities of moving water. To suit the habitat need of a turtle yo should find the correct turtle treatment.
regular tap water
A lot of water; 10 gallons of water per 1 inch of shell. So if the turtle is 8" long it should have at least 80 gallons of water.
A turtle needs space for water in which to submerge, but also an area for warmth. The water needs to be chlorine free.
If your turtle is swollen and you notice that his shell is softening it is blood poisoning. If treated by a reptile vet immediately your turtle will be put on a drip. However if left a few days there is no cure and the best thing to do is put your turtle out of misery as it is a terrible death. I am not sure as to why this happens, it has only happened to one of mine and i did everything right. unfortunately i could not find a reptile vet in time(they are hard to find) Never keep other turtles in the same water with sick ones.
If your turtle has swollen feet, or any feet at all, there is a good chance it is a tortoise. Tortoises live on land and have feet; turtles live in the water and have flippers.
They should have access to a source of water as well as a place to get out of the water at all times.
Yes, you can and you should. Tap water should never be used in a turtle tank. Use Brita filtered water, or, if you can afford it, fill the tank with Poland Spring.