Yellow leafs!

[SmokenKowboy]

25 days in flowering, have 4 plants in tent. One plant has lots of yellowing leafs. Is it iron deficiency? I know leafs will turn yellow but that happens farther into flowering expecially when flushing! I know then they (plant) start using what's in leaf when it has deficiency. Ha something like that.
Wish I could post photo.
Any and all comments welcome.
Thanks to all in advance.

[Green75]

Try to screen shot your photo then add it....
works for me...

[Royal Nugs]

Yellowing could be any number of deficiencies.

The first thing to check is going to always be PH before adding nutrients.

What media are you using, nutrients, ppm?

A picture truly is worth a thousand words.

[Karlee]

What stage of nutes are you in? and is it lower fan leaves?

[South Sierra Dude]

I won't have your definitive answer but some more info would help.
what soil?
What are you feeding them?
what PH do you adjust to?
What is the PH of your runoff water after feeding?