Clawing leafs and pink edges/tips

So gradually over the last week or so my 3 WW have started to claw a lot of leafs, and the tips and edges of a lot of leafs have started to become pinkish red just on the very edges, with purple stems wherever the light is shining onto them.
Also starting to fade to a lighter green, and some of the tips appear slightly burnt (not nutrient burn)
I have only fed the plants twice throughout it all sofar, twice flowering nutes a little less than 1/2 strength, with a bit of N, just recently. (Bit of epsom salt for Mg aswell.
For one, I believe I have a cal/mag deficiency. But i dont see that causing all of the symptoms i am having.
They're a little past 3 weeks into flowering. 3x 300watt leds, 2x4 area. Ffof/coco mix.
They have thrived perfectly up until recently.
Any help is appreciated.
Also the one plant has small brown spots that are spreading quite rapidly. I thought it was a deficiency at first, but its spread to some of the leafs on the plant closest to it. I have examined with a microscope for pests very thoroughly. I've almost given up trying to figure the spots out because I've made multiple posts about it and cannot get a single reply of what it could be other than "must be a deficiency or something". I dont see a deficiency spreading from one plant to another... maybe I'm wrong and deficiencies are contagious lol
(The leaf with the brown spots has been off the plant for 2 days. Prior to being pulled off, it was completely green with just the brown spots.)
(Sorry about the blurple lighting, I know it makes things tough, but I appreciate any help)

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The last picture in specific has the pink/red edges. The pink edges and fading to lighter green is mostly on the secondary branches. The main ones are quite a deeper green, but more leaf clawing.
Temps 76-78light
70-72 dark
Rh has been a bit high lately 50-55, bad weather has been making it hard to control the last week or two

What's the white on the close up. Looks like pm

The white?
The magnified one, or the close up of the bud/leafs?
If it's the magnified one, that's one of the brown spots, and the only white I see is just reflection from magnifier light

And what's pm?

Ohh powder mildew.
Noo, it's just light reflection
I've examined many many leafs with and without a microscope and no signs of pm.
Lol the light reflection is a bit deceiving though

I think I'm going to try watering tomorrow with plain water, (about PH 7), cause from everything I've been researching it seems like I have the start of calcium, phosphorus, and possibly molybdenum deficiencies which would all say that my Ph is too low.
Which wouldn't be surprising because my flower nutes lower my ph to 4... and no matter how much ph up I've tried using, it never raised it above 5.5, so I never bothered trying to raise it because that would just be insane amount of ph up which would probably kill them with 1 watering lol.
Molybdenum deficiency is really rare, but that is the only single thing I have found that causes leafs to lighten in color and the edges to turn pink.
The spots are a whole nother problem which I have no idea what to do about. All I have is some neem oil, which I've read many controversial things on, but It may be worth trying rather than doing nothing and watching these spots spread everywhere and eventually take over everything.
I still have 4-5weeks left and just seeing how far they have spread in a couple days, they would take over every single leaf well before things are finished up

Just so you know WW has always gone red towards the end of flowering for me. You can see my avatar pic.

jtrizzy said:

Just so you know WW has always gone red towards the end of flowering for me. You can see my avatar pic.

Click to expand...

That makes me feel a little better
Where do you get your WW from?

AndromedaM31 said:

That makes me feel a little better
Where do you get your WW from?

Click to expand...

ILGM.com

Sounds like you've given up on your PH which is more than likely your problem. Unfortunately your not going to have much success in trying to cure your issues if you leave it where it is. Anything and everything you throw at it won't have the capacity to help your plants if the root system is unable to absorb the nutrient your adding to fix a specific problem and thus throwing your PH outta whack even more and since your well into bloom this could be quite a challenge. My first grow (WW & NL) I encountered exactly the same issues your having now and went thru 2 weeks of some pain stacking processes to bring the PH back but in the end I did get it adjusted and a successful harvest.
Your plants actually look pretty good so maybe try and ride it out with where your at now and unless they start getting really bad you may have to try and reign in the PH level again.
If it's any consolation I watered for over 2 weeks with a PH of 9+ trying to correct mine and it did seem to do more good than harm as slowly but surely it came back around and that was after some serious flushing. Keep in mind my method was a bit risky but I didn't know any better at the time because PH up is high potassium and flushing will compact your soil if over done.
GL

Thanks for the response.
Yeah this flowering fees has just frustrated me so much with its low ph, and about 2 weeks ago I dropped my only ph meter right into the damn flowering feed...
I got it worked but have no way to calibrate it now, and even if I did I'm not sure if I could fully trust it after that

I thought I mentioned in your other thread that they might just be Hungry. They are going into the peak of flowering and needed food I think. Specifically micros seem to be deficient.

It's possible this could be caused by a ph issue but you said you've only fed these plants twice.... They easily could just be hungry.

Some leads in the middle of the canopy are turning very pink.
And they probably are hungry, but to display a molybdenum deficiency that would mean that the ph is low, and I'm kinda scared to feed them with nutrients that lower the ph even more

You mentioned FFOF ....

Simple fix ... top dress with FFOF , mix water up with 1-2 tsp of calmag .... PH to 6.3
Water in ...

It eliminates the confusion of what bottle of this and that you might pull out.
The FFOF soil drench recharges medium , plus your ph balanced water will make more essential elements available for uptake.

Remember that coco usually likes 5.5 to 6.0 and FFOF likes 6.3 to 6.5

I'm liking that idea, but one small problem. The one plant is completely filled to the brim. Should I just dig up the top layer?

Bro you're a fucking genius. I never thought of that.
Since my ph metwr doesnt work, and I'm scared about adding nute, the top dressing should give it nutes, and help regulate the ph!!!

Took the vacuum to the top layer of dirt and got about 2 inches off before I came to the roots. Top dressed and watered. The one displaying the worst symptoms was watered extra with a bit higher of ph water.
The brown spots are spreading more and more by the day... everything else I can work with but these brown spots idk what they are or what to do...
Should I just try to neem oil them? Is there any risk of using neem oil?
At this rate they will probably have taken over every single leaf within 2 weeks.

Also I added 5 hygrometer/thermometers to the tent, and realized there was very inconsistent temps.
71° on the right canopy near intake. 78° left side. 70° right below canopy 68° on the floor 88° on the ceiling.
After adjusting the fans and adding a air distributor to the intake theres an even 77° canopy level, below canopy and on the floor.
The ceiling is 84° but that's expected since heat rises of course