Hey all, I'm just wondering why the bottom leaves are yellowing? The water's PH is around 7. I haven't started feeding it yet as it's only a few weeks old. But I'm not sure what this is?

Other than the slight yellowing of the lower leaves, does this baby look ok?

Attached Images

	Photo-0020.jpg (91.5 KB, 68 views)
	Photo-0019.jpg (110.7 KB, 85 views)

__________________
When one person suffers from a delusion it is called insanity. When many people suffer from a delusion it is called religion.

nitrogen defficiency.

you need to start feeding now.

kp

Thanks a lot KP. I was worried it might be something else. I'll start feeding it next water, which should be tomorrow. Thanks again.

__________________
When one person suffers from a delusion it is called insanity. When many people suffer from a delusion it is called religion.

yeah I had the same problem,

good luck ~

__________________
HARVEST!
http://www.rollitup.org/general-mari...pics-more.html

I'm not convinced in my mind it's Nitrogen deficiency.

It's unusual to get a N deficiency after only 2 weeks of growth, and it will only happen if your soil isn't very rich in it and is of a poor quality. The pots you have your plants in look a decent size too, which makes me wonder how the plant could have run out of Nitrogen so quickly. It's true these plants use plenty of N in early growth, but not enough to deplete that container of it in 2 weeks.

The more likely problem is Magnesium, which can look very similar to Nitrogen deficiency in the early stages. Nitrogen deficient plants' leaves usually yellow all over and go a slightly darker yellow, Mg deficient plants' leaves tend to go pale yellow at the tips and tip end half of the leaf then start to turn brown.

It's important for you to correctly identify which of these two deficiencies you have because the cure for each of them is different.

You can do more harm than good trying to correct a deficiency which has been incorrectly diagnosed. You need to find out the cause of the problem and fix it.

__________________
Mandala Seeds Kalichakra and Satori Grow
Holefillers 0.6gram per watt 64w Micro Grow

Not to hijack but a quick question along these lines.

My plants seem healthy overall and are developing nicely. Everything looks great all the way up with large, thick, lush leaves and new growth. But at the bottom the leaves turn yellow and start to shrivel- It's only the first rung or two of leaves and the branches never really grew out anyway. Is this all normal as the plant is putting it's energy towards the top, new growth?

From that it sounds as if a Mg deficiency is the problem as that's exactly what's happened to my other plants and starting to on this one.

What can I do to fix the Mg deficiency?

__________________
When one person suffers from a delusion it is called insanity. When many people suffer from a delusion it is called religion.

Hiya Baked Jesus

You have two options really - fix the cause or remedy the problem.

Finding the cause isn't always easy, but I'll bet it's your irrigation waters calcium content that's locking out the Mg. That's the usual problem this early in vegetative growth. The only real long term solution is to use RO water.

The remedy is bascially to either/or water with 1 teaspoon of epsom salts (Magnesium Sulphate) per 4 litres or 1 gallon of water, or apply a foliar spray in the same proportions.

Foliar spraying is probably the best option in my opinion as the Magnesium is easily assimilated via the leaves and avoids the lockout going on in the soil, foliar spraying also shows quicker results than root feeding.

Just make sure you foliar feed the plants after lights out.

__________________
Mandala Seeds Kalichakra and Satori Grow
Holefillers 0.6gram per watt 64w Micro Grow

Check your PH dude, mg will lock out if your in the lower ph ranges.

If it is Mg def, you will notice the new leaves curling up on the edges as well as chlorosis and necrosis. I had Mg def awhile back and it was easily corrected with two feedings of 1 tbsp epsom per gallon of water. (I added the epsom to the water without other nutes during a 'water only' feeding.)
Peace

Why does he need to check his ph when he's already said it's 7.0?

__________________
Mandala Seeds Kalichakra and Satori Grow
Holefillers 0.6gram per watt 64w Micro Grow