I have a 75g tank in my home office. For the last 2 weeks or so, it sounds like the tank is settling. I don't know how to describe it other than you hear it make a noise like a creak or something. I don't recall it doing that before and even my husband noticed it. I'm really worried that the tank is going to collapse or something. I've had it set up for 3 years on a store bought aquarium stand designed for a 75g aquarium. The tank itself is an Aqueon. I don't see anything wrong with it, it's not leaking or anything. When you walk past it, it creaks a bit louder. I'm thinking of removing the light fixture because I can't tell if its the light fixture thats creaking or if it's the tank/stand. If this thing goes, my husband is going to throw me and the tank out the door :cry: