Sure that in some occasion you've forgotten to close the faucet and the water has overflowed from the water tank, because you didn't realize it was full. You are neither the first nor the only one that has been seen in this situation.
You can avoid this and forget this problem by installing this kit in your tank, which also causes the osmosis system to stop producing water when the tank is full and in the case of using the Pressure Pump Kit, it will also stop until the system produces water again.
Valid for: Power Grow 500, Mega Grow 1000, Maxquarium 000 PPM and Growmax 3000.