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stunned growth, plants don't drink feed  


Metha.n
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Hi,

I'v got a problem with a stunned plants. Since i have had connected them to IWS system they looks over watered. I grow in coco and when watered the plants don't seems to drink the feed and the pot i heavy for few days. For almost now 2 weeks plants barely growth anything!

EC - 1,4, ph 5,8 - 6,2

hum 60 %, 26-28 C degrees, 19-20 during the night  as it is 18-6 schedule 

I'm  growing under 2 LED lights equivalent of 600w and 1 hps 600w at the moment, for veg.

I'v done flush as i been thinking about nutrient lockdown 2 days ago.

116811862 2701078886772569 8103079330915066445 n
116883427 3744997498860126 2074305531459237881 n
116718378 302303694446998 1393315024889873355 n
117053307 2937422689817931 7792167689006064723 n

 

But if you have any ideas what could go wrong or how to help, please let me know!

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Macky
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Nice a coco grow, I can help fix this lol 

Welcome to percys mate. Over watering in coco is not easy, as it has very good drainage. Once you feed, any excess water will drip out the bottom and then you drain it away.

As long as you get at least 10% run off from every feed, and that run off is removed from he trays, you will see very few problems.

The problem lays somewhere else I think 

When you linked up the IWS, did you make sure all the pipes and buckets where clean? 

What is the EC of your feed made up of? Like what brand nutrients and how many mill per litre? 

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Metha.n
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@macky

Thanks, but it's not what it used to be back in the days, lol

Yes i washed the pot and etc before connected.

I'm using at this grow, dutch pro nutrients:

Root - 1ml/l

multitotal - 1ml/l

calmag - 1ml/l

A & B eatch - 1ml/l

That will sum up somewhere around 1,4 ec

 

It's second time something like that is happening to me and i'm afraid that when i will switch them to flower later when they will look healthy they will remain same size!

From experience i know they should be at least 1,5 to 2 times bigger now.

 

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Green Beard
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Linalool
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I second what Macky says, it’s hard to over water in coco, more info needed to help diagnose mate 🤙🏻

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Metha.n
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Also the plants are clones, and i know other person who got same clones and he had similar issues and apparently, he kept the plants till the pot was dry, then he just feed them and everything went normally after that. But i'm not so sure about it as you most likely know "you never know was the truth" in this environment.

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Macky
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Posted by: @metha-n

he kept the plants till the pot was dry

This is the problem mate. Ill explain:

Coco is not the same as soil, you do not want it to dry out, and it should be kept damp at all times. 

Coco is void of nutrients, you add all the food yourself from day one. You use what is known as salts based nutrients. 

When the water in the coco is drunk by the plant, and evaporated, it will leaves salts behind. This cause the EC of the medium to spike, as there are more salts left behind, in less water. 

Coco should be feed, every day, at the most every other day, but it should be wet at all times. Other wise a salt build up can happen, and EC spikes, and that will cause issues. 

Sometimes, you can burn the roots because there is too much salt in the medium and it rasies ph massively. 

Way too much cal mag too if thats in every feed mate. 

Right, so this is what I suggest:

Mix up a new feed, double the amount of water you usually use. So, if youre using 2l each plant, mix up four this time. 

In that nutrients mix, just put Dutch Pro A n B 

Multi total should on be used once every 2 weeks, and the plant wont need any more root stim at this stage so drop that too. 

So just A n B, go for 1.5ml Per litre, then adjust the ph to 5.8

Pour all the water through, and collect all the run off. 

Doing this will reset the medium to the right balance and your plant will be growing by tomorrow Smile

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Metha.n
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@macky

I will trust you with this one mate, will do it today!

Will let you know how it went.

Thank you!

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Macky
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@metha-n There are a few things new growers miss when it comes to growing in coco. Keeping it wet is important, and some dont know that, as most guides will say cannabis like a wet and dry cycle. But that is just for soil grows, it works a little differently. The soil needs to dry out so the roots can get air. But because coco is much lighter than soil, plenty of air can get tot he roots any way it doesnt need to dry out Smile

Keep us informed Smile Good luck

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Metha.n
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@macky

Your advice helped a lot! Thank you Smile

I'm going to switch them in future days to flower, i'm going to give them dutch pro explode, any advice you could give me about it? 

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Macky
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@metha-n @ZombieNation ~Uses Dutch Pro, so he might be able to give you a good idea of what you should do Smile

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February 22, 2020