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Help assess my plant’s issues!

  • Thread starter Thread starter GreendangerMN
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Help assess my plant’s issues!

GreendangerMN 51 Replies 3,644 Views
Page 2 of 3 · Replies 21–40 of 52
#25
ArtfulCodger said:
Tips and stripes. I'd turn the light down. It sounds like you're feeding enough, but the plant still can't keep up with demand.
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Dont you think its the high EC causing a lockout rather than the lights being too intense? He is feeding WAY more than enough hahaha. Also I dont see signs of light or heat stress. I guess this can be cleared by asking:
What light and how many inches from the plant?
 
#26
Eledin said:
Dont you think its the high EC causing a lockout rather than the lights being too intense? He is feeding WAY more than enough hahaha. Also I dont see signs of light or heat stress. I guess this can be cleared by asking:
What light and how many inches from the plant?
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Lockout wouldn't be my first guess. I feed coco 1.5 EC and higher after the first week or two. Edge curl, taco-ing, and inteveinal yellowing all suggest too much light to me, but you're right...let's see what OP is running for light.
 
#27
closettrapper217 said:
5.9 ph is fine in coco. That shouldn’t be your issue. I feed lower ph than 5.9 in coco all the time and see no issues. Where mine lands between 5.5 and 6.3 I send it and have never ran into a problem

Sometimes young plants can be hard in coco because you have to start introducing nutes so early. A lot of times when they are small like that I get some weird colors and they grow out of it. Idk this line of nutes but does it have cal mag of any sort?
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I have been adding Cal/Mag to each feeding.
 
#28
Eledin said:
Oh man I just saw your EC, thats bad, thats more than triple what it should be getting. Is that the EC of your water with nutes or in the soil? In whichever case is bad. You dont want more than 0,5-0,8 EC when theyre still so young, as they grow you can increase to 1,5 and flor flower you can go up to 2 if they can take it well, you gotta read them to know when youre giving too little or too much.
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Ok thanks! That is the EC of the nutrients in the water before watering. I have top fed twice and plan to turn my autopot on in a week or so.
 
#29
GreendangerMN said:
Ok thanks! That is the EC of the nutrients in the water before watering. I have top fed twice and plan to turn my autopot on in a week or so.
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What is your water's EC straight out of the faucet? It's often over-looked but its frequently very helpful information.
 
#30
Eledin said:
More than burnt it looks like it has a lock out problem because when the veins remain green its usually that the leaves are not recieving a key nutrient. Are you using tap water? And the calmag from that line? (Im assuming youre using the calmag since you said your using the full line). Coco holds on to calcium a lot but if you over do it youre still gonna cause problems, it can only hold so much, and after that excesses can be very problematic
From google so I dont have to type:
Too much calcium in coco coir can cause nutrient imbalances, specifically leading to deficiencies in magnesium and potassium. This can result in stunted growth, leaf discoloration (browning or yellowing), and reduced overall plant health. While calcium is essential for plant growth, excessive amounts can hinder the uptake of other vital nutrients, disrupting the delicate balance needed for optimal development.
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I am using well water and the Cal/Mag is from Botanicare.
 
#32
RoadKillSkunkHunt said:
Also, alternate epsom salts dissolved into your feed water at a teaspoon per gallon every other watering. Since you're in coco, we'll be looking for the sweet spot between just enough calcium to supply the plant's needs without over-doing it. The epsom salts provides magnesium which you will need as you move through this issue.

Anyway, keep following along with @Eledin. He's covering the bases quite well. I've only been stepping in for clarity when I think something needs a bit more explanation. He's spot on with his observations.
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I realy apprecite your feedback and suggestions. This is my first run in coco using salts. I've only ever run organic living soil, so I have some learning to do, that's for sure!
 
#33
Eledin said:
Dont you think its the high EC causing a lockout rather than the lights being too intense? He is feeding WAY more than enough hahaha. Also I dont see signs of light or heat stress. I guess this can be cleared by asking:
What light and how many inches from the plant?
Click to expand...
I have been very careful not to exceed 400 ppfd. I am using the floraflex 700 raised up to the top of the tent and still only running at 30%.
 
#35
GreendangerMN said:
I have been very careful not to exceed 400 ppfd. I am using the floraflex 700 raised up to the top of the tent and still only running at 30%.
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Your approach with your light is generally fine if everything is growing well. However when things aren't, this would be a rule of thumb to follow ...

When you start showing leaf problems, dim your light. This slows things down to help give you time to sort things out. This is temporary. Once new growth shows you've fixed the issue, then you turn your lights back up.
 
#37
RoadKillSkunkHunt said:
Your approach with your light is generally fine if everything is growing well. However when things aren't, this would be a rule of thumb to follow ...

When you start showing leaf problems, dim your light. This slows things down to help give you time to sort things out. This is temporary. Once new growth shows you've fixed the issue, then you turn your lights back up.
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Ok, good to know! I will lower it and see how it looks.
 
#40
GreendangerMN said:
I have been adding Cal/Mag to each feeding.
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And yet it didn't improve, right? I suggest taking the chance and bumping it up just a smidge to 6. We've got people who say 5.5-6.5 is fine in coco but you can look at those charts and see for yourself, just below 6.0... like somewhere around 5.95 or so, plants can't make use of calcium even if it's available to them.

Where I see folks have success is they'll start in the lower pH range in soulless mediums (haha, autocorrect did that and I'm leaving it!) like 5.6-5.8 and as the plant gets a little bigger they move it to 5.8-6.0 as the nutrient demand shifts.

But at the end of the day here's my take. Younger plants don't have much need for calcium yet and they are normally able to metabolize what little they need, except for one problem. And that is the electromagnetic wavelength generated by LED lighting strips it of its calcium and magnesium and it leads to a deficiency you wouldn't encounter normally until a later stage where you would have already adjusted to a slightly higher pH in preparation of the demand.

So like what do ya do... add more cal mag? Back off the lighting? Adjust your pH?

And just a final thought, not sure how you are getting your pH readings but if it's a digital pen they are prone to being off a little, so you could be even lower than you think... but strips or reacting agent drops, not so much.
 
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