yesterday I purchased a already established saltwater aquarium off of craigslist with 3 fish, 1 frog spawn, crabs, snails, basically the works. It has basically all the equipment you could ever need (at least from my understanding and knowledge as a beginner). I bought it because It was not only a great deal but I felt awful for the livestock in the tank. From the picture the woman posted the tank was completely neglected, I mean algae everywhere and detritus covering the sand. I basically made it my mission to restore this tank. So, since the tank is already established I'm afraid to move it too much since I already put it through a car ride. I set it up in my room but I hate the way the life rock is set up and I am anxious to clean it. But I'm sure the fish are stressed as well as the 1 frog spawn coral. Is there decent way I could re-scape this tank and clean it without harming the livestock? I probably sound like a noob but I am just so new and worried about this reef. Also I am trying to do water changes little by little since they are so used to their current water conditions but if I move it too much and the water becomes dirty will it harm the fish? Although I am just starting out I have done a lot of research and am focused on having this reef looking and feeling great. I can use all the help I can get thank you!