I have owned a 55 gallon freshwater aquarium for 5 or 6 years now. I had considered converting to saltwater but never pulled the trigger. A friend of mine has a 90 gallon saltwater setup that he no longer has the time to maintain so he is shutting it down. He is giving it to me for free (the best price ever!). This includes the tank, stand, filters, lighting, etc. I am going to assume I will have to start this tank from scratch. From what I have read online it may be best to do this anyway. The main thing I am looking at right now is live rock versus dry rock. My guess is that I am using the terms incorrectly but I am assuming those reading this will understand what I am asking. Here are my questions: 1. Dry rock versus live (wet?) rock. As everyone knows if you research on the internet you get positives and negatives on each. 2. I stopped at one LFS they had manmade rock. Thoughts on that? 3. With either choice would you recommend buying at the LFS or online? Obviously the online option presents fairly significant $ savings. 4. If online do you have any recommendations for reputable sites? I do want to make sure whatever I get is environmentally responsible. I don't want to get anything that harms the reefs (I have read about issues with this). 5. Any recommendations on what rock to get? Again if you search online you get all kinds of opinions. One thing worth mentioning is that I have plenty of time to get this tank up and running. In other words I will have the patience to let it cycle properly before I add anything to it. I rushed the first tank I ever did and I learned you never win in that situation. Thanks to all for your time and advice!