A pump drives the water from the tank to the droppers in the pots to bathe the roots and drain into the tank, thus the irrigation cycle is resumed, this is what is called active hydroponics, with which you will obtain spectacular results.
It is clean and easy to use, it measures 75 x 75 x 20 Cm. If you have heard about the advantages of hydroponic cultivation and you do not want to have more than 4 plants, this system is a good choice. We recommend a 120x120 wardrobe.