Hippo Auto Top-Up for a Gro-Tank without Tank

The Auto-Top-Up system is a novelty that has saved many plants for many gardeners. In a passive way, it supplements the irrigation in the tank for NFT systems (passive = without the use of a pump and electrical energy). You can go on holiday or go away for the weekend without the plants losing the necessary nutrients. For connection to a GroTank. We deliver without a tank.