Purpling with a bit of brown spotting???

Need your opinions...
I have 16 fems in flower right now. Keep in mind, most of them are around 10+ weeks and finishing slowly due to a bit of rootbound (I didnt get them into flower soon enough and dont have room for transplanting, it would just stress the plants at this point anyway).
Heres the deal.. Out of 12 finishing plants.. Most show alot of green leaf finally starting to yellow a bit and looking good. But 2 of them are showing some possible problems... Theres some tiny brown spotting on the feeder leaves. It starts from the vein out. Theres brown rings aroung the trichrome foot.. And also alot purpling in the leaf vein and out. (This is not the good purple). Im thinking potasium def maybe but im so far into flower idk what to do.
FoxFarmOFsoil
Ionic nutes half strength every other water (watered about every 4-5 days)(PH'd at around 6)
While in bloom im using Ionic Bloom 1-1-3 and Ionic Boost 0-5-6 at the above schedule
Dual 400w MH/HPS
low 80's temps
30-40% humidity
Its all in the sig below.


I'll prolly let it ride and finish out but would still like to know what it could be.

Bump... Anyone?

I would just make sure you flush properly and just ride it out. You are too far into flower to be making extreme changes. It is either nutrient deff or nutrient lock out from too many of one nutrients. Would have to say flush with three times the pot size, and then try not to over water and keep em going to finish. Less is more

would like to see the whole plant too, where the discoloration is on the plant helps a lot

TheBone1234 said:

would like to see the whole plant too, where the discoloration is on the plant helps a lot

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My plants are about 3-4 feet tall..
Most of the discoloring is toward the mid to upper portion of the plants.
Heres the set up and a couple other pics but you cant see the problem in these.
View attachment 912053

Sounds/looks like P Def. If your growing in soil maybe try and raise your PH up a little to 6.5-7.0, maybe the P is just getting locked out.

below0 said:

Sounds/looks like P Def. If your growing in soil maybe try and raise your PH up a little to 6.5-7.0, maybe the P is just getting locked out.

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Kinda what I thought myself. If thats so, flushing my plants will help a bit. Its time to flush soon and my tap water is at 7.0

It needs Magnesium and Iron.