I just bought a house with a 33,000 gallon in-ground pool. I've been using it for a month, and it's been great. The previous owner told me that he ran the pump 24 hours a day because he found that it kept the pool cleaner, and the pool required fewer chemicals. I have been doing this since I've had the pool. I am wondering, is it really necessary? How many hours a day do you run your pump? Am I just wasting energy running my pump all the time?