We need to heat the water of a swimming pool of 180 m3 of water, to a temperature of 83 Fahrenheit during 12 hours per day. The outside temperature is 61 F; the natural temperature of the water in the city is 48 F. We need a recommendation for Mega Therm and what Kind of pumps we need? We want to know how long does it take to heat the water to a 82 F? How many energy is going to consume daily to heat the water? Please send us a quotation of the heater water equipment. Thanks.