Hello again everyone, I'm very new into the hobby of fw or sw aquariums/fishkeeping.... Originally i was gonna go fw but the more i look into it, it seems that sw may be the way i should go. I've been on quite a few sw sites researching the maintainence, and cost, but i still don't really know. I definetly prefer the sw fish over fw. My favorite fish of all time is the lion fish and i'd love to own one as a pet. I guess my questions really are.... Will I be okay? I was thinking along the lines of between a 150- 180 gallon tank, but does sw need to be taller than fw? seems too squished for fish to swim... I was also reading things about FOWLR tanks and i think that is what i want but im not positive. Can someone give me a dummy definition of Live rock/ and also a fish only tank, i get a reef tank. Also, what am i looking at as far as an investment goes to start up a tank of that size, or do i need to go bigger? Any help i can get will surely be appreciated, by the way if it helps I'm 23 and in college so i'm kinda on a medium sized budget. Thanks again.