While most of my phrags are growing well, the leaves of some of some of the
new growths and new leaves on some smaller plants have acquired a brownish
yellow sick color. Roots are not bad, but could be better. Some plants
are in S/H and others are in a bark/CHC mix. I am using the Michigan State
fertilizer in RO water, but do alternate with Jack's RO orchid fertilizer.
Multiple fans in the greenhouse keep air circulating, I have shading
(aluminized) now on the greenhouse and keep the temps between 60 and about
75 this time of year. Any comments on what the problem is/could be or a
possible solution? Not all my phrags show this, but I don't want the
problem to spread.

Someone mentioned that I should get a leaf cultured/tested for
Xanthamonous, Fusarium or Anthracnose. Does anyone know where any tests
could be done?

Any suggestions would be appreciated.

Thanks

Charles VanDyke