i have been in the aquarium hobby for 4 years. I started with a 10 gallon then added a 29 gallon. Both of these are freshwater community tanks. Now I am adding a 75 gallon tank and I would like to do something different. I have been looking into what it will take to have African Cichlids or South American. Each looks like I will need to change the water weekly. I will have to get used to that part. My community tanks are pretty easy, but I am willing for the beautiful fish I can keep. What I would like to know from the forum is advice on which way to go? In some ways I would love to have some cichlids that are not as aggressive so I could mix them up with community fish. I have read about a few like that but I don't think would be easy to find. Is the maintenance on a cichlid tank compariable to a salt water tank? If so maybe I should stick with what I know, a freshwater community. Any advice would be much appreciated.