Depends, chances are if it doesn't attatch then it's not liking where it is in your tank. I would also give it more time to attatch. I had mine just sitting in the sandbed in my tank and it was perfectly fine. But then i placed a flat piece of LR down under it and it attatched. Not sure how long it took it to, maybe a week. But i say give it time or try a new spot in the tank to see if that helps.