Response to I plan to build my own pool and the architect needs the pump and heater information. The outside, inground pool is going to be 10' x 20' with an average depth of 5'. I will be using 2-1/2" PVC pipe and I calculated 20' feet of head. I think the Hayward SP2600X5 pump will work. Can you please confirm my calculations and let me know what size water heater I will need. I want to be able to swim in water that is 70 degrees Fahrenheit in the winter when the temps at times fall to the mid 30's.

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