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Old 08-10-2020, 06:11 PM #1
ChuckBanger
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Help with troubleshooting on coco grow

I'm new here and a noob grower. My set up is a 40"X40" grow tent with a MarsHydro TSW2000 led and a autopot watering system. The problem i have look like this:


The leaves get yellow spots and edges and they curl down.
It is the first week in bloom (12/12) and I grow in coco coir with 30% perlite. The nutrient i use is biobizz grow at the moment with 1/4 of recommended dosage. In veg I did not use any nutrient at all. Only PH regulated water. I always aim for PH 5,8.
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Old 08-10-2020, 07:52 PM #2
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I'm surprised your plants are even alive if you never fed them in veg, do you have an ec meter? It sounds like they need more feed. Also as your growing in coco coir you'll need to give them a dose of calmag. Can you post pictures?
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Old 08-10-2020, 08:02 PM #3
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Yes i have EC meter. And it says 0,5 in the runoff...

This is the images i wanted to share above:

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Old 08-10-2020, 08:16 PM #4
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You do know coco has no nutrients in it?
As bigpeter said I'm surprised you've got to this stage...
We need to see pics
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Old 08-10-2020, 08:26 PM #5
ChuckBanger
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Quote:
Originally Posted by potty1 View Post
You do know coco has no nutrients in it?
As bigpeter said I'm surprised you've got to this stage...
We need to see pics
The coco i use says it has nutrients in it. Oh you don't see my pics? Maybe it is because I put them in private mode in the album. Changed to public now. Hope it works
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Old 08-10-2020, 08:34 PM #6
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Here is the pics again: Hope it works now...


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Old 08-10-2020, 08:37 PM #7
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What brand of coco are you using?
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Old 08-10-2020, 08:41 PM #8
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It is a local brand. It says on the package it has NPK 14-16-18
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Old 08-10-2020, 08:42 PM #9
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it is not pure coco it looks like some kind of premade stuff like light mix, promix or other coco perlite peatmoss mixtures.
lightmix has enough nutrients for 10 days, no more in it for balanced growing rates
you have to learn which are immobile or mobile nutrients, and the signs of deficiencies of them.

there are few nice charts for diagnose.
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Old 08-11-2020, 04:57 PM #10
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I emptied the whole system and cleaned it completely. And put in new PH 5.8 water with m ore nutrient (EC 1,4 in the reservoir and 1,6 in the runoff). And today it is way worse then yesterday.



I really don't know what to do here
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