I've been maintaining a crystal clear pool for one year now thanks to TFP! I add liquid chlorine to my pool every 1-2 days and muriatic acid every 2-3 days. Chlorine tabs only when I'm out of town for more than 3 days. My question is: How is a pool guy's WEEKLY care different from my DAILY care? Is he adding more chemicals that allow the pool to sustain itself for 7days? The time I spend tending to my pool is not much, but it is frequent. I'm happy to be saving money by not having to hire out maintenance but I'm wondering what they do differently. Thank you!