Desperately need help!!

Ok..having some MAJOR issues, as you can tell from the pics.
Soil-FFOF
Temp-70 to low 80s
Humidity-55%
Nutes-None
I started these autos in August. Had some heat issues early on, but seem to be under control now.
They started off looking pretty good and literally overnight developed tiny brown/yellow spots on
the leaves. At first I thought it was spider mites, but after inspection with the pocket microscope,
have ruled out ANY type of bugs. Next I did a ph runoff test and found out it was 5.3!! I assumed
this was the problem so I added lime and have finally gotten the ph to stabilize at 6.6. Checked
a few days later and the problem seems to be progressively getting worse!! I know some of the leaves
look nute burned, but I have added absolutely nothing and they've been in the FFOF for over a month.
I realize that the damaged leaves will never recover, but they shouldn't be getting worse right?
Since the ph has stabilized, should I maybe add some weak nutes? Any help would be most appreciated.
I seriously need any suggestions, opinions, criticism...whatever. Thanks all.

What's your PH-value? - could look like ph- is not right.

Could be MG deficiency.

No Nutes did you say? What you have there is a Nitrogen Def. Try to remember that your plants need food, and if there is a no food, the leaves will begin to show the signs..........try and do a half strength nute, with a 1/4 (or even 1/8th) strength Foliar spray. Nirvana does well for this also....Dont be stingy with your plants, they will not like it.........good luck

420God said:

Could be MG deficiency.

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Yes, but that small wouldn't it most likely be caused by a ph-value that is off? - don't know - i'm not that much of a plant doctor ;O)

fabodnickMD said:

No Nutes did you say? What you have there is a Nitrogen Def. Try to remember that your plants need food, and if there is a no food, the leaves will begin to show the signs..........try and do a half strength nute, with a 1/4 (or even 1/8th) strength Foliar spray. Nirvana does well for this also....Dont be stingy with your plants, they will not like it.........good luck

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Really... N def. ? didn't think that it would look like that.. but again im no plant doctor. Just thought/think that N def. will make the plant a lighter green color overall and most on fan leaves?

The plant probably used up most of the nutes available to it in the soil so now you'll have to start a feeding regiment. Most soils can't sustain MJ for it's life unless specially prepared.

Brimi said:

What's your PH-value? - could look like ph- is not right.

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Ph is holding @ 6.6, but got as low as 5.3 for a few weeks.

420God said:

The plant probably used up most of the nutes available to it in the soil so now you'll have to start a feeding regiment. Most soils can't sustain MJ for it's life unless specially prepared.

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Sounds likely. A friend told me it was nute burn, but I don't see how that's possible considering I've
given them nothing other than what was in the FFOF and I've flushed twice!! You think that maybe the
ph being so low to begin with caused a lockout and now that it's stable there's no more nutes to be had
in the soil? Would you recommend 1/2 strength or less?

Over a month old and no nutes. There's your problem. I use fox farm and I start nutes during its 2nd or 3rd week of growth.

Los Muertos said:

Sounds likely. A friend told me it was nute burn, but I don't see how that's possible considering I've
given them nothing other than what was in the FFOF and I've flushed twice!! You think that maybe the
ph being so low to begin with caused a lockout and now that it's stable there's no more nutes to be had
in the soil? Would you recommend 1/2 strength or less?

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Burn generally starts at the lower leaves and works it way up the plant. Your bottom leaves look better than the top. Feed her she's hungry.

Cool. Thanks a lot for the help everyone. I think maybe this grow is fucked, but you've all given me
valuable info for the next one. Better luck next time..I guess.

You'd be surprise how fast she will heal if you feed her. Don't give up on her.

cadeneli said:

You'd be surprise how fast she will heal if you feed her. Don't give up on her.

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Agree'd. Just start out at half strength like you mentioned and work your way up.

Thanks for the encouragement! I just fed 1/2 strength with 2-7-7. That gonna be enough N?
I've got 8-14-9 too. Would that be better?

That should be fine to start. Give it a couple days and see how it reacts.