That's a lot of water. In the U.S. , pumps are rated in GPM (gallons per minute. Your 20000 liters per hour converts to 88 GPM. So you need to find a pump that can produce at least 88 GPM.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c
Answers & Comments
That's a lot of water. In the U.S. , pumps are rated in GPM (gallons per minute. Your 20000 liters per hour converts to 88 GPM. So you need to find a pump that can produce at least 88 GPM.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c