The Aquarium Will Always Cycle Aquarium cycling is a must, folks. It's a natural process that happens whether you want it to or not. Now, if you're a big shot like the Monterey Bay Public Aquarium, you might think you can skip it. They're constantly cycling in fresh seawater, so it seems like they're bypassing the cycle. But here's the catch - they're not. Even in their system, there's nitrifying bacteria doing its thing. For us regular folks, we don't have the luxury of an open system. So, we h