how does a high FC affect PH readings? As I was wasting my water while vaccumming the pool in order to drain for refill tomorrow, I could tell that although my pool looked clear to the naked eye, with my sunglasses (polarized) I could see that my pool did have some light brown film (algae i assume) on the liner. So I stopped and dumped in 2 1/2 gallons of liquid chlorine, just to prevent it from getting worse overnight. Is that ok? Also have another problem...when my husband was vaccumming the pool the other day, he forgot to put the backet back in the return. So has anyone had a clog in their pipes before? and if so...how did you get it out? We were told not to "snake it out". My husband tried to blow it out,but it didn't work. We are pretty sure there is something in the one pipe because when we close the other returns, there isn't much water entering the basket. Any suggestions? Thanks.