I heard someone made a faq on this subject but I cant seem to find it so I'm just going to ask my questions :) To my understanding fidlers like shallow water and a beach. I plan on using a long 29 gallon with an airpump filter for the water. Temperature in my room is usualy around 70. Do I have to worry about them trying to escape the tank? Can I use crappy sand(I have alot of all purpose sand laying around). Do their water have to be to certain specs? What do they eat?