Quote Originally Posted by dubbedout View Post
If your Alkalinity is 330 you wanna get that down, A LOT. you'll want to get some muriatic acid to lower it, this will take some time though because the acid will also lower you pH. So you'll have to add acid, aerate to raise pH, add more acid, etc. Until both your pH and TA are in range.

This is exactly what I had to do. My total alkalinity out of the garden hose is about 300. It took me 8 days and about 5 gallons of muriatic acid, but I got it to 100, and now all is good.