What to do now?

Wizzlebiz said:

She's in coco not soil.

Sorry this was misguided advise. @dizzydaizy

I'm sure he missed the coco part.

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I appreciate the looking out and the corrections.

Wizzlebiz said:

She's in coco not soil.

Sorry this was misguided advise. @dizzydaizy

I'm sure he missed the coco part.

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yup. Totally missed the coco part

Wizzlebiz said:

We are kinda hard on newbies lmao.

I get it

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to be fair , if you go to the doctors office their gunna take your vitals, that's why people get mad with little information, we need the vitals

Pictures have been added to the post.

looks like P tox , coco pushes out P in exchange for calcium perhaps you need to increase calmag ppm to get in balance

kovidkough said:

View attachment 4758764

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Thank for this info-seriously!

kovidkough said:

looks like P tox , coco pushes out P in exchange for calcium perhaps you need to increase calmag ppm to get in balance

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It's better to cut back on a nutrient that is causing nutrient antagonism than try and compensate by adding more of something that is likely already present in adequate amounts. @dizzydaizy mentioned overfeeding in their initial post. Probably best to just dial things back for now rather than increase anything.

increasing the calcium ppm in the coco should have a positive effect on the plants, you need to keep a balance in the Coco, each brand is different and may require less or more calcium to achieve equilibrium. even a flush of low feed should have calmag to maintain the equilibrium . its possible the excess is from the coco and not from the feed. best to try both remedies, either way you gotta keep the coco buffered. flushing out more calcium may add additional problems, here's a link

.

As Coco has a high cation exchange capacity, when you feed your plant with calcium or magnesium, the minerals may never be available to your plant, as it will be exchanging it’s self for sodium and potassium.

This means that your plant, when given a normal dose of Calmag, will actually have sodium and potassium available to uptake as opposed to the desired Cal-mag combination.

An unbuffered coco coir will cause nutrient lock out of calcium and magnesium because the coco substrates have a stronger attraction to these 2 salts compared to potassium and sodium. As a result, sodium and potassium will be displaced into the solution and uptaken into the roots.

By buffering the coco completely until saturation, you can guarantee any further CalMag that that is fed into the media will not be absorbed by the saturated substrates but will sit in-between the spaces of the media ready for uptake by your crops. Remember when you buffer the media with a calmag solution you have to wash the sodium and potassium out of the media other wise you will get toxicity.

kovidkough said:

An unbuffered coco coir will cause nutrient lock out of calcium and magnesium because the coco substrates have a stronger attraction to these 2 salts compared to potassium and sodium. As a result, sodium and potassium will be displaced into the solution and uptaken into the roots.

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If there was a strong arm emoji reaction thing I would give it 2 u

kovidkough said:

increasing the calcium ppm in the coco should have a positive effect on the plants, you need to keep a balance in the Coco, each brand is different and may require less or more calcium to achieve equilibrium. even a flush of low feed should have calmag to maintain the equilibrium . its possible the excess is from the coco and not from the feed. best to try both remedies, either way you gotta keep the coco buffered. flushing out more calcium may add additional problems, here's a link

Why & How to Use CalMag in Coco - Cal Mag Deficiency - Coco For Cannabis

Learn why you need additional Cal/Mag when growing in coco coir. Covers the role of cation exchange & offers simple instructions to avoid Cal/Mag problems

www.cocoforcannabis.com

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That site is not the holy grail. There is quite a bit of information on there that I don't follow and never have any issues growing in coco.

That particular section you linked to is incorrect. I've been growing in coco for years and have never used calmag and I never have any calcium deficiencies. Things are not just black and white. While calmag may be required when using many cannabis specific nutrients that are lacking in calcium, many other nutrients will provide all the calcium needed. If you're using a product similar to Jacks, Masterblend or other fully balanced nutrient combinations that use calcium nitrate calmag is not needed. The calcium nitrate contains all the calcium needed.

Another section i disagree with is where they state that watering to runoff daily is required to grow in coco is incorrect as well. I use blumats and never have any runoff for an entire grow. The plants grow healthy the entire time. Also, bottom watering with the use of capillary mats has been used in nurseries for decades and today are being used in large scale commercial cannabis grow operations. My next endeavor is to get away from the individual blumats and just use a fabric pots of coco sitting on a capillary mat. Being bottom watered there is never any runoff yet it's a method used in nurseries around the world without having issues from salt buildup or nutrient deficiencies.



That site may have some decent information and is a good place to start but it's full of information that I have found to be unnecessary. I'm not going to get into all the links for products on Amazon that have them as a referral. But in my years of growing in coco I've defied quite a bit of what's on that site and have grown nothing but healthy plants. I'm not knocking the guys that run that site but there is information that is outdated and proven to be incorrect. They don't compensate for the various methods and ways people feed their plants or what they feed. It's "This is how we do it so consider it fact" when in fact it isn't.

My intention is not to start any type of argument but more to point out that you can grow lush healthy plants in coco without following much of what is on that site.

the latter half wasn't from cocoforcannabis.com

it was from this site


that makes 2 sources to your one. he even stated he is new to his fertilizer, its totally possible he didn't buffer. also blu mats work to keep the coco at the perfect moisture level, you also feed a lower EC otherwise I garuntee you will burn. blu mats don't cause the salt build up because something that is always saturated with keep the salts bound to it. while I agree it is probably over fertigation, he should still learn what a buffer is as its not the only source of p tox.

My intention is not to start any type of argument but more to point out that you can grow lush healthy plants in coco without following much of what is on that site.
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Whatever you've been doing is working for you and I dig it. I like the idea of bottom feeding. I do it with houseplants...why can't it work with cannabis? You know? It's a cool idea. Right now I'm at the beginning of my journey and there's so much to learn. I really appreciate a calm different perspective on the grow life of coco. I still have to figure out what works best for me and my environment but I am grateful for a variety of ideas. Thank you for sharing.

Any website tht is cannabis driven is pretty bogus. Look elsewhere for info such as horticulture education sites and things that don't have 'cannabis' in the name. Most of those 'cannabis' sites are stoners who are paraphrasing info from unreliable sources and trying to make Advertising money. The farm logic has really lost it's touch these days but a revolution isa comin'