To begin, I'm very new to fish keeping. My dad kept a SW reef about 15 years ago, so he knows what he's doing to some extent. His old 30 gallon tank (approximately 24x12x24 inches) is in the basement and he's given me the go ahead to try my luck with it. I'd like any and all advice anyone has to offer. What will I need? Approximately how much will it cost? I would like to get some German Blue Ram's but i would need to know how many, male to female ratio, etc. My brother also wants some Corydoras catfish so I'd like to know numbers wise what I could do with the space I have. I think I understand cycling, and I've read the sticky, but again, any suggestions are welcome.