Hi I just had a simple question. We live in the Caribbean and our pool is approx 25k gallons. Here the sun rises at around 6 and sets around 6:30 PM. I was wondering what the ideal hours would be to keep the pump on and which time. We used to keep it on about 6 hours when the sun was hottest from 10 - 3 or 4 but lately we have only kept it on about 4 from 10 - 2 to save current and that still seemed to do the job but not sure in relation to mathematics what would be the best formula. Thank you!