I keep getting these brown spots on my leaves, I'm not sure if it's some deficiency or maybe nutrient toxicity. Any advice?

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I'm using sensi grow A+B at about 500ppm and Voodoo Juice in DWC.
 
I was at 700ppm before and I thought these were nute burns so I changed the res and lowered the nutrients.
 
did you splash nutes on the leaves? just plucked a couple similar from one of ma plants and I know I did splash them a wee bit
 
did you splash nutes on the leaves? just plucked a couple similar from one of ma plants and I know I did splash them a wee bit
I don't think so, those spots grew from the size of the second picture to the size of the first in about 3 days, and in those days there was no way of that really happening.
I cut of the leaves in the first picture when it got worse, now I think I should have just let them fall off on their own.
Now those spots are appearing again on new leaves, yesterday those small spots were barely visible
 
What's the ph? Also have you calibrated meter?
 
aye had the same thing bud I watched the spots spread over a couple of days too. just suggesting that sometimes the simple answer is human error, heres one I plucked this morning the plants are at 5th node now and otherwise fine
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Idk, I would like this to just be nute splashes. I guess I'll see how this progresses.
As to the ph... I thought I could get away with using AN "ph perfect" products and not really adjust the ph myself. Guess not.
I don't have a ph pen, I didn't think there was any sense in buying a cheap pen which probably would not have shown accurate readings anyway, so I got a GHE liquid Ph test in case something went wrong. Right now the Ph seems to be around 6.
 
Okay, something fucky is going on with those nutes. I just added a tad of part A and part B and they definitely lowered the ph to more than 5 but less than 6. That's also the reading i got yesterday when changing the res. So i guess their ph perfect thing kinda works as it does adjust the ph at the beginning, but it can't really hold it there (for me at least).
 
I was at 700ppm before and I thought these were nute burns so I changed the res and lowered the nutrients.

What did you lower them to?
EC=0.4 is what I'd be using right now.
You have nute splashes, too much fertilizer, or both.
 
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