I totally agree! Scary to think I could have added 5 gallons before bringing my water back to test which is what the pool store told me to do!! After reading here, I thought I'd check it & was shocked to see how much it had lowered...and no, they didn't say anything about lowering the pH, but I figured it would from reading here. Just didn't know it would be so much! So, I'm heading back to the store for bleach (quarts, not gallons?) and Borax. I hope you don't mind me posting again this evening after I test again. I am so afraid of the chemical thing since we are so new at this!! It's truly overwhelming (and not as easy as the pool store implied!). Lol! Thanks!!