I have a 10 gallon on my desk which I'm getting bored with. I already have a fiddler crab in it, with fish that I would be able to rehome. I bought a 50lb bag of play sand I was going to use for my 55 gallon, but decided to go with gravel. I would like to replace the gravel in the 10 gallon with sand, get 3 more fiddlers...make them a little beach on one half and slope it down into water.
I've read elsewhere that a 10 gallon can support 4 fiddlers happily. I've also read that it is best to keep them in pairs so for me it would be 2 males, 2 females. I don't know if this is true or not.
How deep should I make the water?
How do I keep the aquarium at the correct temperature?
How do I keep the water clean?
What would be a good salt product to use for making the water brackish or saltwater? (again here I see conflicting information when I read up on them...some say they are saltwater, some sources say brackish, and some say they can cope with salt, brackish and freshwater.) I have had the one that I have in freshwater since april and she's ok, but from what I understand it really isn't good for her.
Should the water be aerated with a bubble stone?
What kinds of foods do they prefer? (I feed the one I have regular tropical fish flakes, and she LOVES algae tablets)
I'm in unknown territory when it comes to these critters so some advice would be greatly appreciated. I have tried reading up on other sites and the information I see is conflicting, so I figured I would ask here where people have actual first hand experience.