Hello all, i really have NO CLUE what i'm doing or how to do it or what to get. I have read around but i am just lost. I am going to purchase a 20 gallon tank tonight. I need to know what else to buy. I'm looking to get a nano reef like this one. http://www.thereeftank.com/forums/attachment.php?attachmentid=16443&d=1085264266 going. That is my goal. Please assist me with links and tell me what filter, heater, and chemicals that i need to get to make my tank into something like that. I have about $400 or so to spend. Thanks!