yellow leaves

[redvetttes]

4 weeks into 12/12
fan leaves on 1 plant are starting to turn yellow at the top
the rest of the crop is still green,
is that common or is it too soon for plant breakdown,
800tds, ph 5.5-6.2

[karmaxul]

With a tds of 800 if the medium does not get enough oxygen the ph in spots that are constantly wet can develop low ph which can lead to yellowing. I use under 400 ppm.

One love
c

[latewood]

as you cut down on nitrogen in flowering, the fan leaves yellow, die and fall off, this is a good thing...you don't need alot of Nitro in bloom, and you want the plant to use it up.
this will allow plant to process all the nitrogen; dry and cure faster, and taste better...also, you have a somewhat weak solution for wk4f, but that's OK...you won't nutelock them that way.

If your overall plant looks OK and all that is yellowing are larger fan leaves, then:thumbsup: Don't worry.lw