:rant:Hi,
Re-tested.
FC=8ppm
CC=0
CH 200
CYA I used 1/2 pool and 1/2 bottled water. I thought the black dot disappeared at 50 but saw it a little and added to 40. So, somewhere in there.
Now, I paid a lot for this test to find out what is wrong with my plaster AND NOW you're telling me you...