So that's either 3 FC or 1.2 FC, depending on sample size. Did you use 10 ml or 25 ml?Okay I did the FAS-DPD test. The water in the tube turned clear after adding the 6th drop. Thank you again
That makes your FC = 3.I filled the water up to 10ml in the tube. I have no idea what I'm doing to be honest. I think I have read alot of things about having too much cya and so I really wasn't sure how much to add. So to be safe until I asked you I only put half of the container into the skimmer. Thank you again