How often should I clean my fish tank to ensure a pristine and healthy environment for my aquatic companions? Is there a specific frequency that is ideal, or does it vary based on factors such as tank size, fish species, and the types of plants or decorations present? Could the presence of algae or uneaten food also influence how frequently I should be performing maintenance tasks? Furthermore, should I consider the cycle of the aquarium and the role of beneficial bacteria when deciding on a cleaning schedule? Do I need to change the water entirely, or would partial water changes suffice to maintain optimal conditions? Are there specific signs indicating that the tank requires my attention, such as cloudiness or unpleasant odors? What role does regular cleaning play in preventing diseases among my fish, and how can I balance aesthetics with the health of my ecosystem?