Interveinal chlorosis on new growth

[Talonxracer]

I just got mine and loving it! I also have the Hanna HI9813-6. good quality instruments are worth every penny IME. Blue Labs has Hanna's Groline beat from reading all the reviews thus my purchase.

I can not agree more on quality gear! Another aspect is proper cleaning, calibration and storage! I use a Hanna HI9814 and love it!