Stay away from Galcon. Three defective programmers. Two broke the nozzles on the faucet and the other one stayed open and kept watering continuously. The dealership whistles secretly. They do not admit that they have problems. Unacceptable and the Israelis = Galcon. One throws the ball to the other.

Unfortunately, with a natural flow of 5,000 liters, the water tank did not have the ability to have even a minimal water flow. Whether with the program or in manual mode, it could not respond at all.
It may require high pressure to be able to work.
In installation with natural flow from tanks, it cannot work.