First Grow, sick plants

Hey everyone, started my first grow first week of December from seed, plants were vegging really well until about 2 weeks ago, they have started to yellow and leaves are looking droopy. Some details on my grow

- 4 plants total, 2 AK47 2 Lemon Ice (photo period)
- 4 x 5 x 6 tent (PVC/pandfilm diy tent)
- 6 inch high velocity inline fan
- 2 300 watt Galaxy Hydro LEDs
- soil Miracle Grow organic (probably part of my problem)
-3 Gallon Smart pots
-plants have been low stress trained/fimed several times
-Nutrients: "Advanced nutrients veg/bloom/micro"
-Have been PH's testing the water prior to feeding, PH of runoff around 6.0)


Attached photos: Before: (looking healthy)
After: Yellowing/drooping leaves, they appear to be yellowing both older leaves and the newer growth which is baffling me.


Any help/suggestions would be greatly appreciated for this n00b.

Thanks!

Flush with straight water... looks locked out and burnt... id ph the water at 6.7 for the flush

How often are you watering and how much? How often and how much nutes? Whats your soil ph? Runoff doesnt matter check actual ph.

pineappleman420 said:

Flush with straight water... looks locked out and burnt... id ph the water at 6.7 for the flush

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Just recently ran a flush on Friday with PH'd water, but they have seem to have gotten worse since,

lio lacidem said:

How often are you watering and how much? How often and how much nutes? Whats your soil ph? Runoff doesnt matter check actual ph.

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My watering has been inconsistent since I flushed on Friday, but just gave a few cups of water last night thinking they may need it. I'm using about 1/3 the amount of nutes they say to give for advances nutrients. about a month ago I started giving full strength, not sure if this might have been part of my problem.

And PH of soil, honestly not sure I have a crappy Ph meter that dosen't read the ph well so I've been testing the runoff water, which tests yellow at around 6.5 which i thought was good..

Yeah looks like zinc deficiency which can happen when you're having root problems. Best thing to do is let the soil dry out. Common mistake to overwater in soil. Sometimes if the plant stresses out it can cause zinc def but once it recover it will go back to normal. I'm not a soil expert though, so take this with a grain of salt.

PistilCalyxCola said:

Yeah looks like zinc deficiency which can happen when you're having root problems. Best thing to do is let the soil dry out. Common mistake to overwater in soil. Sometimes if the plant stresses out it can cause zinc def but once it recover it will go back to normal. I'm not a soil expert though, so take this with a grain of salt.

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ok thanks!