The Works Flake: Having trouble deciding on which flakes to try? We don't blame you. We love all of our premium formulas. And we aren't the only ones who appreciate variety. Your fish do, too! Give them "The Works" to satisfy all of their needs. This is the ultimate mix of 10 amazing flakes! We can't list the exact flakes, since it changes slightly from time to time, but our best ones are in there. Great for community tanks. No Preservatives.