We just opened our pool 2 days ago and using the TFT test kit our numbers were
CYA with the tube filled all the way up I could still see the dot so it is less then 20 I would assume.
We have added about 12 gallons of bleach so far and also have some 3" tablets in our chlorinator. We have tested again with the only thing changing was our TA is at 130 now. The pool was green but has cleared up a little still cant see the bottom.
I was going to add some CYA to the pool but it says that would should not if there some added last year. That does not make since to me but I thought I would ask here and see what the pros say.
The pool is a vinyl liner inground and I am guessing about 20,000 gal. I am including a link to a diagram of my pool if someone can help me figure out for sure how many gallons it is. Thanks for your help.
http://i75.photobucket.com/albums/i292/ ... 0931AM.jpg