Day 14 browning on edge of one leave and yellow spots

[MedGrower]

Hey Ibz, this looks familiar and as I said earlier, this type of rusting is what I expected to happen. As you are feeding her nutes at 6.2 pH these problems should start to clear away and new growth will be nice. So as everything is good from now on; Do not worry and just relax

This is really why I always keep at 6.2 for vegetation. Exactly why.

 

[ibz]

Hey Ibz, this looks familiar and as I said earlier, this type of rusting is what I expected to happen. As you are feeding her nutes at 6.2 pH these problems should start to clear away and new growth will be nice. So as everything is good from now on; Do not worry and just relax

This is really why I always keep at 6.2 for vegetation. Exactly why.

Thanks for the quick response med!
Shall I leave that leaf to die or cut it off? I also read a couple people have had similar things happen due to a magnesium defficeny I've only included 1ml/g calmag is that sufficient?
In trying to follow the Lucas formula for coco but I've only given the plant calmag 4 times.


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[MedGrower]

It is ok to leave on for now or just cut it away if the new growth is healthy. pH being corrected should be enough now and added calmag shouldnt raise the ec more than 0.2. In my opinion.

 

[ibz]

Thanks mate! Il see how it goes for a couple days


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[jingo]

Hey ibz

All you need to do is set your pH to 5.8 and get 15-20% run off and your golden. ALL of your issues stem from not enough run off.

Failure to get run off causes salt build up and nute lock out, same goes for letting any part of your coco dry out. Whenever it dries out it gets salt build up on the coco fibers.

I use your nute line up and a bit more very good nutes, just need run off. Personally I'd water once a day at this point, it will give you more air in the root zone and better growth.

I'm not saying others were wrong in their advice since lack of run off is a nutrient, pH, feed strength issue in its presentation.

 

[ibz]

Hey ibz

All you need to do is set your pH to 5.8 and get 15-20% run off and your golden. ALL of your issues stem from not enough run off.

Failure to get run off causes salt build up and nute lock out, same goes for letting any part of your coco dry out. Whenever it dries out it gets salt build up on the coco fibers.

I use your nute line up and a bit more very good nutes, just need run off. Personally I'd water once a day at this point, it will give you more air in the root zone and better growth.

I'm not saying others were wrong in their advice since lack of run off is a nutrient, pH, feed strength issue in its presentation.

You could be right man as I was really thinking about watering to run off and a lot of my coco was dry from inside I'm guessing as I never pre saturated
I decided to water to run off

Water in :- ph 6.2 ec 390
Run off:- ph 6.4 ec 490

So my ph was high and I guess I did get a salt build up and lockout hopefully it should start to get better now I increased the ph to 6.2 to get the mag intake I will hover around 5.8 to 6.1 to try get all uptake

 

[ibz]

By the way I wasn't watering to run off yet as the roots haven't filled the pot up will that be an issue?


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[jingo]

By the way I wasn't watering to run off yet as the roots haven't filled the pot up will that be an issue?


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I start watering to run off after the first true leaves, before that they should have enough nutes from my pre charge.

Roots will tend to stay in the wet areas when you don't water the whole pot, so you're not going to see your full potential. But, What's done is done, the nice thing about coco is it will get better fast!

There best way to benefit from coco is to water multiple times a day. To do that without a ton of waste with autos is something I've yet to work out. Especially since you don't repot.

Think I got off on a tangent there. So when you water the next few times get extra runoff and then just settle back into the nutrient strength you were on before you started working on these issues.

You'll be surprised at how fast she perks up. If you don't get the response you want suspect you're pH pen.

 

[ibz]

I start watering to run off after the first true leaves, before that they should have enough nutes from my pre charge.

Roots will tend to stay in the wet areas when you don't water the whole pot, so you're not going to see your full potential. But, What's done is done, the nice thing about coco is it will get better fast!

There best way to benefit from coco is to water multiple times a day. To do that without a ton of waste with autos is something I've yet to work out. Especially since you don't repot.

Think I got off on a tangent there. So when you water the next few times get extra runoff and then just settle back into the nutrient strength you were on before you started working on these issues.

You'll be surprised at how fast she perks up. If you don't get the response you want suspect you're pH pen.

Thanks for the quick response and a lot of what your saying seems to make sense..I have more peace of mind knowing all my coco is finally soaked lol! Will post pics in couple days with my success/failure (hopefully success!)


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[jingo]

When I talk about salt it's surprising how quick it can build up. In the following photo all the white under the right leave is salty on the coco fiber from my nutes.

Once a seedling is tall enough I like to add clay pebbles to keep the coco from drying out and add air.