My girlfriend and I moved into a house and the previous owner had a 125 gallon tank that they did not want to move. Therefore we agreed to buy it. AT first I did not like the tank for several reasons. But after I sat down and figured out what each piece of equipment did and what I needed to fix or replace I can say that I LOVE my tank. Actually I left town last week for 4 days and the whole time I couldn't wait to get back and check on my tank. Now that I have every thing working from the fans to the Sump it is amazing how peaceful and enjoyable this hobby is. I want to learn so much more and I even want to move up eventually to a 200 or 250 gallon tank.