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 Post subject: Help needed please
PostPosted: Jun 9th, '21, 19:15 
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Hi everyone :)

My system is running pretty well. It's a 1300L system with three IBC grow beds.

My plants grow very well ( unless basil, don't know why...) but they show some deficiencies and I can't define what. Can you please help me?

Every week I check pH which is around 6.6 and 7. When I want to bounce up my pH I use potassium carbonate (KHCO3). Last week I added 10grams of epsom salt.

I try to keep Iron near 2ppm.

Nitrates are 40ppm.

Oh and the leaves on the pic are quiet young.

Thanks a lot


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 Post subject: Re: Help needed please
PostPosted: Jun 11th, '21, 06:34 
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Sometimes it's very hard to tell what the deficiency is or even if there is one.

From the pic,it looks like a couple of "deficiencies" or nutrient lockout,but it also looks like heat stress too.

The 1st thing is to stop adding things to the root zone,you might be causing a nutrient lockout.Add the KHCO3 to the water & foliar spray the epsom salt.And see if that helps.

I had basil problems when the water (root zone) was too hot.

What's the temp of the water?.And can you show a pic of the whole plant that's affected too.

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 Post subject: Re: Help needed please
PostPosted: Jun 11th, '21, 15:03 
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7341 wrote:
Sometimes it's very hard to tell what the deficiency is or even if there is one.

From the pic,it looks like a couple of "deficiencies" or nutrient lockout,but it also looks like heat stress too.

The 1st thing is to stop adding things to the root zone,you might be causing a nutrient lockout.Add the KHCO3 to the water & foliar spray the epsom salt.And see if that helps.

I had basil problems when the water (root zone) was too hot.

What's the temp of the water?.And can you show a pic of the whole plant that's affected too.



Hey,

I don't think it's coming from a heat stress because water temp is around 17°C. And I do not add things in the root zone, I always add KHCO3 in my sump tank.
Thanks


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 Post subject: Re: Help needed please
PostPosted: Jun 11th, '21, 18:03 
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Drummat wrote:
And I do not add things in the root zone, I always add KHCO3 in my sump tank.
Thanks

That is the root zone :lol:
It's where the water touches the roots.If you're using tap water where there is a lot of Calcium & then add Potassium and Magnesium to where the roots absorb or take up nutrients (root zone),it's possible you can cause at least one of them to become unavailable.
And since you are adding at least 2 of those weekly?,that could be a reason for the "deficiencies" (it might not be).

If you could take a photo of the whole plant,it would help determine the problem or tell us what part of the plant is most affected by these problems.

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 Post subject: Re: Help needed please
PostPosted: Jun 11th, '21, 19:43 
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7341 wrote:
Drummat wrote:
And I do not add things in the root zone, I always add KHCO3 in my sump tank.
Thanks

That is the root zone :lol:
It's where the water touches the roots.If you're using tap water where there is a lot of Calcium & then add Potassium and Magnesium to where the roots absorb or take up nutrients (root zone),it's possible you can cause at least one of them to become unavailable.
And since you are adding at least 2 of those weekly?,that could be a reason for the "deficiencies" (it might not be).

If you could take a photo of the whole plant,it would help determine the problem or tell us what part of the plant is most affected by these problems.



Oh ok thank you! But I use rain water and when it has not raining for a while I use tap water.

Yep, I'll send some pictures of my system and the plants.


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 Post subject: Re: Help needed please
PostPosted: Jun 11th, '21, 23:27 
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Epson salt... magnesium right? Should only need a pinch of that a year if I remember correctly.

On the other hand deep green veins and light green leaves sounds more like an iron deficiency or potassium.

Mostly likey Iron since you haven't added it. I drop in a table spoon every two weeks in my system.

For patassium and micro nutrients seaweed extract is awesome in expensive stuff.

Sent from my SM-N970U using Tapatalk


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