PH & CC testing

[Zinnia]

New to testing. Do you read the comparator in the sunlight when testing the PH. It seems if I am in the sunlight I get one reading and can take it inside or into the shade and get a different reading. Which is the best?

CC reading is now .2. Do I need to SLAM? Up until this week the CC has been 0. Is there a cause?

Thanks for the help.

 

[mknauss]

pH is best read with a white background. I use a sheet of paper. Indoors or outdoors.

CC of 0.2 is OK. Above 0.5 can indicate an issue.

Be sure to use a 10 ml sample for your FC testing. One scoop of powder, each drop equals 0.5ppm FC.

Take care.