Yellow spots on leaves

Don't give up!!! Those girls will grow up and you will smoke them. It's strange how a little girl can get you sooooo depressed. I'm a Rookie. I've had a bunch of screw ups, but I almost all-ways managed to get some smoke, even on some of my worst grows. Your in good hands now, listen to the smart ones--keep showing pics and your girls will be OK. Good Luck---:jointman:
 
Don't give up!!! Those girls will grow up and you will smoke them. It's strange how a little girl can get you sooooo depressed. I'm a Rookie. I've had a bunch of screw ups, but I almost all-ways managed to get some smoke, even on some of my worst grows. Your in good hands now, listen to the smart ones--keep showing pics and your girls will be OK. Good Luck---:jointman:

Thank you for the support!

Just everything was absolutely perfect and then suddenly hell broke loose out of nowhere and it’s step by step figuring out what to do etc, I appreciate all the people who drop in to help me!


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Nxte, if you cant see any mite under the leaf, right up tight to the under veins, than you dont have white mite ok, in addition, mite attack the whole plant top to bottom, your only seeing the lower leaves affected.

I take it it is the first time you have used cocco ?? I have seen this age old issue many times Nxte, that is, your cocco is still very new, when new, it is very alkaline in it's content. As cocco fibers hold a large alkaline reservoir of calcium 'Alkali" salts, bound int to the "New" fiber's..........

To prove this, do a 'Run Off" test, watering the cocco with a plain water (Watering), Ph'ed to 6. Then get a 100-150ml of fresh run off water, and "Take The Ph".............. you will find it is quite high, around 7 to 7.5'ish....

The first 'macronutrient" to be locked out to high Ph is; Phosphorus, then iron & manganese... micro nutrients........... and so on..... the lower leaves affected, will drop of later in the plants life anyhow, we all pull off those first young leaves later in the plants life...

upload_2019-2-19_15-41-46.gif

it is my opinion, that the slight, very slight, yellow micro spotting, is the early sign of Phosphorus deficiency developing. It is only in the bottom leaves as, these are the younger leaves, when the cocco was first wetted, first 1-2wks.......... when the Ph of the new cocco is very high................. this is why House & garden, now pre wash their cocco to reduce, high alkalinity, that the new plants dont like !!......... ALR

Addendum;
(Advice)
Bin the cocco !!....you want trouble free medium, Ph 6.5 stable start to finish ??......... gold label special mix

Now you have started, you should finish in cocco........... however, as they are young, you could to prove a point, get some gold label special mix, tap out one of the plants, re pot it up in same pot with special mix, for a comparison on the yield,

see which one cocco or special mix gives the best result, a re pot of new medium (Same temp as cocco) wont hurt at all at this age, the one plant re pot will shrug it off, no bother............ make sure your feed water is 21c to 23c warm before you feed, or at least above your soil temperature, for best nutrient uptake............... ALR
 
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Nxte, if you cant see any mite under the leaf, right up tight to the under veins, than you dont have white mite ok, in addition, mite attack the whole plant top to bottom, your only seeing the lower leaves affected.

I take it it is the first time you have used cocco ?? I have seen this age old issue many times Nxte, that is, your cocco is still very new, when new, it is very alkaline in it's content. As cocco fibers hold a large alkaline reservoir of calcium 'Alkali" salts, bound int to the "New" fiber's..........

To prove this, do a 'Run Off" test, watering the cocco with a plain water (Watering), Ph'ed to 6. Then get a 100-150ml of fresh run off water, and "Take The Ph".............. you will find it is quite high, around 7 to 7.5'ish....

The first nute to be locked out to high Ph is; Phos then iron & manganese...

View attachment 1017194
it is my opinion, that the slight, very slight, yellow micro spotting, is the early sign of Phosphorus deficiency developing. It is only in the bottom leaves as, these are the younger leaves, when the cocco was first wetted, first 1-2wks.......... when the Ph of the new cocco is very high................. this is why House & garden, now pre wash their cocco to reduce, high alkalinity, that the new plants dont like !!......... ALR

Addendum;
(Advice)
Bin the cocco !!....you want trouble free medium, Ph 6.5 stable start to finish ??......... gold label special mix

Now you have started, you should finish in cocco........... however, as they are young, you could to prove a point, get some gold label special mix, tap out one of the plants, re pot it up in same pot with special mix, for a comparison on the yield,

see which one cocco or special mix gives the best result, a re pot of new medium (Same temp as cocco) wont hurt at all at this age, the one plant re pot will shrug it off, no bother............ make sure your feed water is 21c to 23c warm before you feed, or at least above your soil temperature, for best nutrient uptake............... ALR

Thank you for the extremely informative post, have you seen my latest pictures just in the post above?

I will test the run off for sure when I next feed.

And make the changes that you’ve suggested.

I will order some of that medium and will transplant one into it as recommended.


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Nxte, will be good to see the special mix do it's wicked "Dutch" stuff !!............. after translocation of a chosen one, of the 4, into the gold label.....

One other thing, pyrithium in the "mite treatment", is just a sticky solution, "Neem Oil" that holds the adults still untill death, around 5 days.........

But dose not kill the juveniles, larvae, or the eggs laid, during the 30 day cycle of the mite (Red, white or other)..... There is only one treatment that will, 'Kill" all stages of the mite life cycle......... one drop in 1ltr +

Harkers "Harkamectin".............. it is used to kill same mite family, on fancy wild foul .......... ALR

Addendum;
For me, aquapot, aquavalve, aquatrays combi, inc gold label special mix........
best thing since sliced bread !! zero hassle, zero issue, zero deffs, maxi crop, automated !! i do use Greenair's "genesis" Mush though to be fair ;)

You may see iether a high Ph 7.5 or above, or a low Ph 5.1 or less, from your new cocco run off Ph test, using warm water @Ph6.............. iether though are bad, you wont find it at 6.5 for sure, remember i said that !! ALR
 
Nxte, will be good to see the special mix do it's wicked "Dutch" stuff !!............. after translocation of a chosen one, of the 4, into the gold label.....

One other thing, pyrithium in the "mite treatment", is just a sticky solution, "Neem Oil" that holds the adults still untill death, around 5 days.........

But dose not kill the juveniles, larvae, or the eggs laid, during the 30 day cycle of the mite (Red, white or other)..... There is only one treatment that will, 'Kill" all stages of the mite life cycle......... one drop in 1ltr +

Harkers "Harkamectin".............. it is used to kill same mite family, on fancy wild foul .......... ALR

Addendum;
For me, aquapot, aquavalve, aquatrays combi, inc gold label special mix........
best thing since sliced bread !! zero hassle, zero issue, zero deffs, maxi crop, automated !! i do use Greenair's "genesis" Mush though to be fair ;)

You may see iether a high Ph 7.5 or above, or a low Ph 5.1 or less, from your new cocco run off Ph test, using warm water @Ph6.............. iether though are bad, you wont find it at 6.5 for sure, remember i said that !! ALR

the run off was 5.6-5.7 from 5 litres of water given to one of the plants.


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....lowers are getting tapped out for N, some of which is normal during bloom, but this is more than it should be... But first I think you need to check that in-pot pH at this point, if it's too acidic in there, that can start to lock out P, and S (makes the whole plant pale, tops worst) and adding more will make matters worse,... problem is how to do that, with no pH soil probe... Are you adjusting the feeds before watering in, and adding Ca-Mg first before anything else? Oh, just saw the pH meter problem :doh:.... well, that needs to be fixed, no working pH meter makes it impossible to test in-pot pH even through the crude run-off method,... otherwise, a soil pH probe like the Accurate 8 is a solid tool to have, I love mine and it's indispensable IMO..... Since you're in coco, it's needs to run about 6.0pH,... what amount of run-off are you getting each watering? Have you read up on how to run coco? it cannot be treated like a true soil, it will bite you in the ass if you do,... in some ways, it's closer to hydro'... coco should be feed weakly, often 9daily in some cases), the pH and TDS/EC taken going in and coming out to make sure you aren't getting a nute salt build-up problem; odd as it sounds, never water alone in coco, it can screw up the whole CEC balance (cation exchange capacity) .. this has to do with coco's odd CEC properties, as mention above, coco is a Ca hog (Mg to a lesser extent), and will bind it to itself keeping from the plant until it's sated, and then it does the give-and-take thing readily,... Coco breathe very well, so overwatering is more difficult vs soils, it's why it can be feed so often.... That said, and if you haven't done all this, then a build-up issue is definitely in play here, but with no TDS/EC meter, again we're stuck with advising further,... you can flsuh the pot, but you can't do it with water alone, the solution has to be specific for this.. RO/Di water, pH to 6.0, with 150ppm Ca-Mg plus 150ppm nutes; pour through enough to get therun-off values close to inputs....
 
....lowers are getting tapped out for N, some of which is normal during bloom, but this is more than it should be... But first I think you need to check that in-pot pH at this point, if it's too acidic in there, that can start to lock out P, and S (makes the whole plant pale, tops worst) and adding more will make matters worse,... problem is how to do that, with no pH soil probe... Are you adjusting the feeds before watering in, and adding Ca-Mg first before anything else? Oh, just saw the pH meter problem :doh:.... well, that needs to be fixed, no working pH meter makes it impossible to test in-pot pH even through the crude run-off method,... otherwise, a soil pH probe like the Accurate 8 is a solid tool to have, I love mine and it's indispensable IMO..... Since you're in coco, it's needs to run about 6.0pH,... what amount of run-off are you getting each watering? Have you read up on how to run coco? it cannot be treated like a true soil, it will bite you in the ass if you do,... in some ways, it's closer to hydro'... coco should be feed weakly, often 9daily in some cases), the pH and TDS/EC taken going in and coming out to make sure you aren't getting a nute salt build-up problem; odd as it sounds, never water alone in coco, it can screw up the whole CEC balance (cation exchange capacity) .. this has to do with coco's odd CEC properties, as mention above, coco is a Ca hog (Mg to a lesser extent), and will bind it to itself keeping from the plant until it's sated, and then it does the give-and-take thing readily,... Coco breathe very well, so overwatering is more difficult vs soils, it's why it can be feed so often.... That said, and if you haven't done all this, then a build-up issue is definitely in play here, but with no TDS/EC meter, again we're stuck with advising further,... you can flsuh the pot, but you can't do it with water alone, the solution has to be specific for this.. RO/Di water, pH to 6.0, with 150ppm Ca-Mg plus 150ppm nutes; pour through enough to get therun-off values close to inputs....

Thank you for that.

I have the pots sitting flat on the trays, so they don’t drain properly from the bottom. Any idea what I can use to prop them up in the trays to allow run off?

Also, for the full on yellow leaves, should I defoliate these along with any other dead leaves?

I fed 4ml calmag, 4ml micro and 8ml bloom today and gave each plant separate 5 litre feedings with the above remedy.

Best,

Nate




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Oh and this was now fed correctly at 6.0-6.1 PH - the closest I could get it to 6.0 PH.

Recalibrated my PEN using buffer solution. Should be good to go now.


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Recalibrated my pen, went in with a can-do attitude. Fed 4ml Cal-mag, 4ml micro, and 8ml bloom and each plant got their own feeding of this plus 5 litres of water each. Cleared away the run off and low and behold, three of the girls are showing some life again!

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UTXFdAG.jpg


Other two are slowing perking up

CPwvdTz.jpg


Road to recovery!




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