Current Cultures Under Current® Pro Epicenter’s (also known as the Control Module) are the brains of the system. All flow of water in the system is ran and controlled through this bucket. Made of UV stabilized, solid ABS the Under Current® Epicenter Modules were built to last. The massive 35-gallon Epicenter Module comes many with various parts included to best suit your needs. Manufactured in California. These items are drop ship only.