Dinamed CBD 600w KIND LED - Coco and Advanced nutrients

Indoor Growing
#30

Do you have a second way to check Ph ? Drops, paper maybe Does your pen/ meter have a calibration option? When I was thinking about looking into one, the kind that needs to have the tip stored into solution , the 75-100$ kind, the store clerk mentioned if the tip ever dries out that could really fuck them up to the point they would never work properly again ! What’s your media BTW?

Edit : have you used the coco on other on any other runs? Could this be improperly rinsed coco that didn’t get the salts rinsed out?

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#31

are the leaves wet in those pictures?? almost looks like russet mite damage to me. have you scoped for pests? (u need 60-100x zoom to see them)

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#32

whats your humidity an temps at how much are you watering are you letting it dry out before watering again

#33

Good catch @legalcanada! If not moisture that definitely looks like possible honeydew !

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#34

Nights are getting cool so pests are getting desperate outside and looking for homes. I have eradicated a small flush of whiteflies then white aphids back to back in the last two weeks.

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#35

@Tinytuttle I guess my pH meter is fine. I use calibration solution every week and calibrate it from the back with screwdriver :slight_smile: Last time I used just coco with trichoderma. This time I am using coco with cork and it has some nutes in already for start. The salts are ok. When I water with nutes. The same amount of nutes comes out so that should be fine…(a bit higher)
My last grow btw: First profi Coco grow 60x60 tent 250w HPS

@legalcanada the leaves are wet form clean water. I spray them every day. I am sure a dont have any bugs or whatsoever…I check everyday…

@Growinnblowin I check and write RH and temp every day. Last three weeks: I check it every day between 8am-10am. I always write down lowest/highest/current. ¨
For last three weeks its been: Lowest 45-50% average, highest 84% average and current about 55% average. The temps are: 19C lowest every day, 26-27C max, 25-26 average
The light starts at 7am and goes of at 12pm. The intake fan is on for all 17h with light. At night no fans are runing. Only inside fan runs 3times (every two hours) a night to “scrub” the air.

I water every 2-3 days. They are in smart pots so they dry prety quickly. They are 1inch (3cm) dry when getting water.

Last four days the humidity is always at 45 when I check it at 8am :frowning: thats bad :frowning: I
immediately fill up the humidifier and it goes back to 65 average…

#36

I’m beginning to wonder if the cork in the mix is the culprit! What I would do is just switch out the media in one pot with your old go-to media and see if it makes a difference if it bounces back within I’d say 2-3 days you at least know where the problem lies then.

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#37

OK So i should try to transfer one plant to the regular coco mix? :slight_smile:

#38

Ya I would give it a go I never have transfered plants out of smart pots but I would try just pealing the fabric back on its self to where the pot would be inside out when it comes off this would also be a good time to look at your roots if weak roots are noted this could be an issue also how old are the plants at this point?

#39

@Tinytuttle The clones were bought and transfered to the smart pots exactly 19 days ago

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#40

Ya hopefully ya didn’t get a bad batch of clones my guess some plants might be finicky as to what there grown in could be just that strain from a particular batch! Let me know how it goes in the next few days!

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#41

It might be Phosphorus toxicity. Are you using coco specific nutrients? Coco holds on to some nutrients more than others, especially calcium and megnesium. It also has a lot of Phosphorus in it which can lock out other nutrients if your mix is not right. The coco formulas are modified specifically for this.

I find these links helpful;
https://www.icmag.com/ic/showthread.php?t=231387

https://www.loudclouds.co/wp-content/uploads/2016/07/marijuana-deficiency-chart-jorge-cervantes.jpg(image larger than 1200KB)

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#42

I am using Powder feeding from green house seeds. Mineral nutrients for every media( I am mixing for coco) I used them for first grow(went with no problem at all) and I use them exactly the same way on this grow but this time something is wrong. Maybe the cork in the substrate is problem with these type nutrients as @Tinytuttle wrote earlier… and some nutrients are locked in the corc and cousing toxicity and deficiency at the same time…

#43

If you are getting def. then toxicity more than likely something is causing PH fluctuations. If you are watering with straight RO water often that alone could do it. Every watering needs a little ppm so it doesn’t take minerals from your soil. If that is the culprit flushing makes it worse. Just something to think about.

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#44

I always add i bit of Calcium when flushing :slight_smile: But guys! Its not coused by the Cork :smiley: because I still Have the plants from earlier. Those original DINAFED CBD :smiley: I forget to tell you. at ther start, when they stoped growing a built my old tent back and put them in it. And I put the new clones into my new tent. And the plants cbd are doing very well actualy :smiley: :smiley: Just one outake fan And 250hps bulb and nothing else :smiley: fuck it :smiley:

So the clones are Just srewed up by my fault somehow but dont know why :-/

Anyway here are the cbd pictures :slight_smile: they are 6 weeks old

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#45

New problem. I watered the cbd plants this morning with Ec 1000 pH 5,7 since they got 500 Last Time and they curled leaves down :-/ this one is normal

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These are not
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And one of the clones has got some sick leave

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Any idea? Thanks you guys a lot :slight_smile:

#46

You could try increasing your pH. P and Mg are more available at higher pH. Try going up to 6.0-6.2

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#47

The leaves curling down looks like low ph to me. That clone would scare the shit out of me in my grow room. I am wondering if it is root pathogen or virus. I would compost and try again.

Edit: I hate to scare you but i don’t take a lot of risk in my grow. Losing genetics is hard on me so i protect all my genetics by being strict with each plant.

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#48

Were you @Fisch going to try a one pot change out to see if the results might change?

#49

yeah, I agree with Rick and Ryasco. ph is low

1 Like