Why are my plant's leaves yellowing?

Jman2323 said:

It's a super soil setup. The bottom 1/3 is fox farms soil mixed with nature living soil.. The top 2/3 is just fox farms.

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I dunno if I would consider this a super soil, I would consider it 1/6 super soil and 5/6 fox farms which is not a super soil on its own. 5 gallons of that is probably not enough to flower a plant without additional inputs... In the first couple photos at least it just looks like the plant is hungry.

Jman2323 said:

Why would I see improvement if I let the soil dry out or was that a typo?

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Like I said, if your soil was staying to wet. Your pic looks like dry at that present time of the photo.
If your not over watering, I'd suspect pH(KCI) to be your issue.
Also temps but I'm rumming my LED garden at ambient 75F, soil is 72F according to my testing equipment.

Check out my thread in Organics, I just had this same issue.

With LEDs 84f is best. It’s all about LST. leaf surface temp.

Calcium & Magnesium with LED grow lights
Some LED growers add extra Calcium and Magnesium to their plant feed. This is partly related to grow room temperatures and heat emission. Good quality LED grow lights produce less heat than HPS, with less plant transpiration (moisture loss) as a result.
This can mean reduced mobility for Calcium and Magnesium ions in your cannabis plant. One way to avoid potential Calcium/Magnesium deficiency is simply to add extra in with your normal plant feed.
Most grow shops sell Calcium/Magnesium supplements. Calcium/Magnesium deficiencies tended to be most common with some of the older LED grow lights, and especially some of the lower quality versions. This suggests that the cal/mag deficiency may be related to e.g. an incomplete light spectrum.
With good quality modern LED grow lights the cal/mag deficiencies have not been as obvious.

fskitch said:

Most grow shops sell Calcium/Magnesium supplements. Calcium/Magnesium deficiencies tended to be most common with some of the older LED grow lights, and especially some of the lower quality versions. This suggests that the cal/mag deficiency may be related to e.g. an incomplete light spectrum.
With good quality modern LED grow lights the cal/mag deficiencies have not been as obvious.

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also increased photosynthesis >> builds more mass >> demands more nutes
the part about incomplete spectrum is rather esoteric as most modern LED have still a non-complete spectrum anyway and I doubt a specific colour has remotely anything to do with nutrient processing - except for the sun's broad infra-red.
the decreased passive nute intake from less transpiration is spot on though

Jman2323 said:

Yes it's a commercial product. (Nature's Living Soil). I went of a thread on growweedeasy.com. It was talking about having a proper ph for your water and that spring water has a good pH for this setup.

Also I really appreciate any help you can give. Thank You always!

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You are talking like every spring water in the world has same ph

amneziaHaze said:

You are talking like every spring water in the world has same ph

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From what I've read spring water has a neutral pH of 7