I honestly don't remember offhand but I don't think it was ridiculous or I wouldn't have gotten it lol It's a great little filter and it has a lot of space in it so you can put in your current media (you might have to cut it into smaller pieces). Get a cheap airline valve so you can adjust the flow of the bubbles. My betta actually likes playing in the bubbles sometimes (he's a weirdo) and it keeps the tank pretty clean. Plus I don't have to unplug it when I do water changes. And the bubbles look pretty LOL