Burn? Deficiency? Other?

Hi everyone. I'm new to the board and new to growing...and now new to growing issues. I looked for these particular symptoms in numerous threads and never really saw exactly what I see on my plants. And many times, some people would diagnose "bugs" for one of the symptoms, but I have yet to see a bug anywhere. I almost feel like I'm seeing a few small problems in play at once, but I don't attribute them to ph problems because I've been monitoring that very closely and it remains 5.7-5.8 (hydro). Everything seemed fine up until I last transported them and replaced the nutrients about 5 days ago.

I first suspected nute burn, but have been taking out a gallon of nute water and adding distilled water (ph balanced) in its place for the last 3 days. (One thing to note, about twice a day, I was also heavily misting the plants with balanced water, no nutes. I know that temp is sometimes a problem with this, but I use LED so I didn't think heat would be a factor here. I've stopped doing this about 48 hours ago.) The plants seem to be getting new growth, so they are not completely stunted, but they did slow down dramatically when the problems started. The roots are still growing out the pots like crazy and the problems haven't hit all parts of the plants, but the problems have hit the lower, middle, and top leaves. Any input is greatly appreciated, even if I'm making an obvious bonehead mistake. Thanks in advance.

Here are the specs and pics:

Two plants (LA Conf/Purple Chemdog), grown 2.5 weeks from clone
Indoor tent grow (4x5x3)
Bubbleponics system (10 gal reservoir housing both plants)
LED lighting (Blackstar 240w Veg Light)
Nutes: GH 3-part Floral Series, Rhizotonic, and Myco Madness
Temp: 64low/82high (although 82 is rare)

Symptoms:
"Eaten" away parts, even on new growth - no bugs seen thus far
Some yellow/brown tips
Some yellowing in the middle of leaves
Some leaves feel "papery"

Pics (taken just now):





 

alienrain

Well-Known Member
I'd like to know the answer to this too since I'm seeing something similar. From what I saw in the plant problem thread they're saying is a potassium deficit. I would wait and see if it gets any worse.

It might also be light stress...I think it takes a bit to get used to how close you can have your LEDs to your plant.

Hope someone else can weigh in on this.
 

nick17gar

Well-Known Member
all pics minus the last, look like damage from bugs. check pH too, as ph can cause some wierd looking shit

the last one looks like minor nute burn, not to worry, just cut back a little next feeding with the nutes, and up the water a bit.
 
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