The claw?? Nitrogen toxicity? Roots are appearing near drainage holes.

Hi all, Ive got what seems to be this claw people say is associated with nitrogen toxicity, could it be anything else? Also my pots are not huge and the roots have appeared where the water runs out it this an issue or will they just continue to grow inside and not out?

Pot size depends on the size of the plant you want in the end.
How big is the pot? how tall and what stage of growth is the plant in?

as for the possibility of nitrogen tox.
What medium is the plant in?
what have you been feeding it?
Take a photo of the whole plant if you can.

Plant details are on my other post also with pics have a look and any feedbacks good feedback! Thanks mate

Plants are in coco coir day 30 under 400wt hps not sure of pot size I'll put up a picture, they are in their first week of 12/12 and have been feeding them proper veg nutes from the weed shop. I'm not looking for huge plants as I've only got about meter and a half high closet with with white plastic on the sides.

Here's a couple of shots afar.

Hey Buckweat, Nitrogen toxicity usually has very dark leaves as well as the clawing downward.
Your plant looks on the pale side rather than too dark. More like a deficiency than an overdose.
How far is your light from your plant top?
Light burn can make your tips curl downward and give the appearance of yellowing off before getting to the advanced stage.
A zinc deficiency in early stage could also be the problem.
What water are you using and what PH

Hey coreywebster,
Plants are about 18 cm from the light maybe they could do with a feed I haven't really had a feeding schedule but now they have started 12/12 2 days ago would it be to early to give budding stage nutes? The coco coir has added pH but I'm not sure if after a few flushes it would. How can I up my pH?

hi buck thats deffo looking more nitrogen def than toxicity id move your light a little higher too just to be on safe side as for getting ph up u can buy a chem to do it or i used liquid silicon to bring the ph up was cheaper than ph up chem and more benificial also having an off ph can cause a nute lockout so this could be the case

I use baking soda or a silica product to up my PH when needed....i use white distilled vinegar or lemon juice for ph down....

Awesome thanks for the info.

Buckwheat007 said:

Hey coreywebster,
Plants are about 18 cm from the light maybe they could do with a feed I haven't really had a feeding schedule but now they have started 12/12 2 days ago would it be to early to give budding stage nutes? The coco coir has added pH but I'm not sure if after a few flushes it would. How can I up my pH?

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Hey man, Coco buffers well so feeding it higher PH or lower will adjust the overall ph of your coco.
I was asking when your feeding what ph your water is so that we can all help diagnose the issue your having. So your ph is the acidity of your water, in Coco feeding with coco nutrients you want around 5.5 to 5.9 ph value. If its higher then your plants can not absorb some nutrients, for example calcium and zinc.

And the reason I asked what water (tap,well RO) was just to try and rule out a few things, since tap water usually has reasonable levels of micro minerals like iron calcium magnesium ect, RO water doesn't have those so know that helps diagnosis too.

I will add a chart which shows the best PH ranges for certain nutrient. It shows Hydro and soil comparison. Coco is considered Hydro so look at that side and hopefully you will see what I mean.

As for your light.. I would raise it to about 18inches instead of CM.

It could be a number of problems, to me it looks like a N deficiency but the curled down leaves made me look at all possible options. Plus a N deficiency usually shows massive yellowing on bottom leaves rather than across the whole plant evenly.

I haven't really had a feeding schedule but now they have started 12/12 2 days ago would it be to early to give budding stage nutes?

Usually in coco with the right nutrients you stick to the veg nutrients for the first week. If there is a N deficiency then stay with Veg nutes because they contain more N. Ideally you want your plant to be as close to perfect before flipping. Not much you can do about that.
Raise your light.
Feed the correct Ph nutrient solution
Hopefully the problem will be on the way to resolved by the time you switch to flower nutes.

Ok good chart and explanation, just using tap water might pay to invest in pH tester. Would adding a little baking soda to the top coco and watering do more harm than good without knowing levels?

Buckwheat007 said:

Ok good chart and explanation, just using tap water might pay to invest in pH tester. Would adding a little baking soda to the top coco and watering do more harm than good without knowing levels?

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A Ph meter is invaluable for sure. You can get little chemical ph testers like they use in aquariums for very cheap too, just not as accurate.
Yeah I would not add anything like baking soda until you have tested your ph of water. It could make it worse. obviously water varies in ph from place to place but more often than not its more common to need to lower it rather than raise it. So without knowing which way you need to adjust its not worth it.

Awesome thanks heaps really appreciated.