It's a DID clone, you have to unscrew the tiny screw bits (3) on top in order to unscrew the top platform from the bottom. There's plenty of videos on how to set it up on youtube. Be sure to keep an eye on how tight the tank snugs into the bottom part when you put it back together. If it's too loose you will get leaking, might have to put dental floss or change the o-ring to a thicker one.