Could someone help me name this deficiency please?

My plants stems seem to be getting purple streaks in them and the leaf is yellow in the middle as you can see. What can I do to change this. Any and all help is much appreciated.

Thanks
Addz

Plants look pretty good. id ignore the purple.

Could it be a cal/mag related? leafs look to me to be suffering from mag issues.

Oh that's great to hear, I'll get right to the grow shop and pick up a bottle of cal mag and hopefully it sorts itself out, thanks man!

Addz said:

Oh that's great to hear, I'll get right to the grow shop and pick up a bottle of cal mag and hopefully it sorts itself out, thanks man!

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slow down a little bit..

What are you feeding it? strength etc. It could be hungry.

I'm in coco. Week 3 veg Using Plant Magic a+b and root stim for the moment until they grow a little bigger. The base E.C of my water is 0.6 and I'm feeding at 1.5ec at a PH of 5.8.

Addz said:

I'm in coco. Week 3 veg Using Plant Magic a+b and root stim for the moment until they grow a little bigger. The base E.C of my water is 0.6 and I'm feeding at 1.5ec at a PH of 5.8.

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you issue is likely multi layered



water your plants with plain water... take a sample of the run off that come out the bottom of the pot and test the EC and ph

when the EC comes back with a very high reading, (which im sure it will) flush/leach your medium with lots and lots of plain water until you get the drain water EC down below EC 1.0

your source water has an EC of 0.6 which is high... have you a water test showing whats in it? whats the ph of the source water? do you know if its sulfur water or iron water or hard water containing large amounts of calcium?

do you have any kind of filtration system on the water source, water softener or whatever

I don't often say this but you might need to think about getting a reverse osmosis filter and dilute the source water so its 50/50

half R.O. and half source water

what are the npk numbers on the fertilizer bottles?

post a picture of the entire plant

Addz said:

My plants stems seem to be getting purple streaks in them and the leaf is yellow in the middle as you can see. What can I do to change this. Any and all help is much appreciated.

Thanks
Addz

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There is nothing wrong with your plants! They r growing fast and the plant hasn't been able to keep up with chlorophyll production. This is perfectly normal. The older growth will soon green up and newer growth will be a lime green or yellow color from dark period growth.

Addz said:

I'm in coco. Week 3 veg Using Plant Magic a+b and root stim for the moment until they grow a little bigger. The base E.C of my water is 0.6 and I'm feeding at 1.5ec at a PH of 5.8.

Click to expand...

Does look like it could use just a little more magnesium however.

Was just probably a Mag deficiency. Fed some calmag now all is good. Thanks for the help guys.