Hello, I'm completely new to keeping an aquarium and I had a specific question. About 3 days ago I got a very small aquarium (almost 5 gallons) to take back to college with me because I've wanted some fish in my dorm room. I've set it up and let the heater/filter run, and today I bought a fiddler crab, two small snails, and one dwarf puffer. The tank stays at a constant 78 degrees and I was told this is ideal for the tropical freshwater fish.
I have two questions - I know that these fish and the crabs like brackish water but they've been kept in freshwater tanks. Is it ok for me to continue to keep them in freshwater?
And I'm also going back to college in about a week. I'm concerned about transporting them in the tank (I'm driving) its a 4 hours drive - can I put them in the transport container they came in for that time and then put them back inside the tank when I get to school? Or will they die in the container for the 4 hour drive??
Thank you so much in advance...I can't wait to learn. :) I'm an environmental science major and I've always loved aquariums....I hope I can be successful with my first one.