This iDoo indoor herb garden's hydroponic circulation system grows plants faster than if they were in soil. You can control the weather conditions all year round and you don't have to go out in the cold. The LED grow light turns on automatically to simulate the sunlight spectrum. It encourages photosynthesis so your plants grow big and strong, whatever the conditions. And it even waters your plants for you. The 4.5 litre water tank and pump automatically run on a 30 minute cycle to keep your plants hydrated. There's even a handy viewing window so you can see when it's time for a top up.Good to know- The integrated fan system circulates air to simulate pollination by natural methods- You can adjust the height of lighting section for different plants at different growth stages- There are two smart grow modes - blue light for veggies and red light for fruits- Its compact design means you can place it on any surface around the house