How much baking soda can I add in a day?

[mwsigler]

I have a test kit and I am very confused.

I had the numbers run a week ago at a different store . I don't have the sheet in front of me, but everything was pretty good except alkalinity was low. So I added some more baking soda. I know it was 50 and the ph was 7.2.

I had it tested there at the beginning of that same week and my alkalinity was 0 and the ph was like 6.6 . So I was able to get it adjusted.

And the iron was a little high, but she said to watch it and see. Well after the kids getting a green tinge to their hair, I figured I better get something for it.

But my test kit didn't match any of the numbers they came up with either.

This is our 4th year with the pool and everything has always been fine. So this is the first time it has really been out of wack and I don't feel like I know what I am doing.

My water looks great. It is crystal clear. You can see the drain from the door to the house which is probably 50 - 60 feet away.