Ora 60L DehumidifierOverview The Ora 60L Dehumidifier helps prevent, and rid your grow space of mould, mildew and disease by removing excess moisture. General Information Ensuring your environment is optimised is essential if you are looking to achieve maximum yields. A major element in optimising your environment is humidity. If the relative humidity is too high in your grow space, it can create an environment in which mould, mildew and disease can thrive. Benefits