This invention is for a business method in which is disclosed a step by step procedure for quick, clean and efficient cleaning of hydroponics growing (“Flood”) trays. The method essentially comprises the use of a custom-fitted tray insert of a lightweight material designed to fit inside the much heavier-duty hydroponics growing tray. After the plants are grown, the lightweight insert tray is removed and discarded, thus saving the manual labor of cleaning and sanitizing the heavy-duty growing tray before the next use.
