I've been cruising the forum re: metal stains and see that I can order Ascorbic acid from a chemical company. I guess that beats crushing vit c tablets. Does anyone know how long it takes to get the stuff?

What happens to the water once all that ascorbic acid is introduced?

My numbers today are a little skewed since we've had a lot of rain recently:

FC - 6.5
CC - 0
TC - 6.5
pH - 7.3 or 7.4 (It's between the 7.2 & 7.5 marks on the container)
Alk - 100 (down from 120)
CYA - 30
temp - 82 F (I have a heater that keeps it at this)

What should I be doing first so I don't get things too out of whack?

Thanks.

CoffeeBean