OK Im pretty good with a SW tank but don't know much about FW. I`m starting a new betta tank and wonder if there is any thing I need to know. It will only have one in it and will be a three gallon tank. Is it just like SW where I feed my fish every other day or do I need to feed more or less? I do have a small filter for it. I just feel so bad for those fish in a small glass and can at least liberate one of them. Looking for some responses to help me out.