IHateMyPool

Thank you Waterbear, I will get the test kit you mentioned. Generic chemicals?

Hello, Well, just returned from 8 days of vacation to find our 30,000 gal in-ground pool totally black with floating yuck over the entire pool. Can honestly say, never seen our pool in such shape. Before leaving, shocked the pool and filled chlorinator with tablets, chemistry was fine. Our area did experience several intense rain showers from the tropical storm, but how could our pool go from clear to a pond in 8 days? In fact, I have seen much cleaner ponds.. Here are readings now: Free Chlorine = 0 PH = 8.4 Total Alkalinity = 80 Total Hardness = 100 Cyanuric Acid = 0 Just backwashed, added 8lbs of shock and re-filled the chlorinator. Will bring a sample to Warehouse pools tomorrow and expect to spend lots on chemicals. Any suggestions would be appreciated. Thank You.