Watering system \"Hydro Max\" - The environmentally friendly, efficient solution Hydro Max is a self-regulating watering system that saves you time and resources. The water tank is a clay vessel which can be easily integrated into your flower bed, ensuring adequate irrigation of your plants. Just fill your Hydro Max with water every few days and the rest is taken care of. Plant roots instinctively grow toward the porous clay which allows them to take exactly the water they need when they need it. Save up to 70% more water - the environment will thank you! Higher plant yields in less time and less water consumption - our watering system \"Hydro Max\" makes it possible! Also available in sizes S, M and L, depending on your water-storage needs.