New Grower nute lockout? cal mag? phosphorus?

[thedailydose]

hey everyone. hoping someone can help me pin point the problem on my plant.

GSC @ DAY 46 (today) (last watered on DAY 40)

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3 gallon pro mix
gh trio micro/gro/bloom + cal mag for feeding @ 6.2-6.5ph
2 3500k autocobs @ 25" from the top running 20/4

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- saw the progression of the leaf problems today when checking.
- ph has been around 6.2-6.5 for both plants but this is the only one with issue
- havent watered until run off!! so im thinking its nutrient lockout?

i watered her today with 3gal of plain ph water to flush the lockout
- run off was orange! (sorry i didnt test run off.. i should have!)
- 3gallons of water seemd to clear out the soil with run off turning slight yellow/clear

 

[Jimbojohn]

Get in soil ph (meter or slurry).

Definitely introduce and/or up your cal-mag supplement.

Get your temperatures into the 85f range.

 

[thedailydose]

Get in soil ph (meter or slurry).

Definitely introduce and/or up your cal-mag supplement.

Get your temperatures into the 85f range.

thanks for the reply @TheArchitect

ive been feeding at 2ml/g throughout the whole feeding and will up the dose at next feed!

her soil is still wet so ill wait a couple days for soil to dry for the slurry test

my temps been around 70/84 average (hit 90f 3x this grow) so raising it to 85 shouldnt be a problem.

ill keep my eye out for sickness progression and will keep this updated when the soil is dry enough for a slurry test

 

[Jimbojohn]

thanks for the reply @TheArchitect

ive been feeding at 2ml/g throughout the whole feeding and will up the dose at next feed!

her soil is still wet so ill wait a couple days for soil to dry for the slurry test

my temps been around 70/84 average (hit 90f 3x this grow) so raising it to 85 shouldnt be a problem.

ill keep my eye out for sickness progression and will keep this updated when the soil is dry enough for a slurry test

Ca/Ma needs are exasperated with LED's. I'm currently feeding 6ml/g (GH Cali...) running QB 288's w/ 301b diodes. I have no ir off of these lights, to get leaf surface temperature into an optimal range to facilitate uptake mobility I need to be in the 83-87f range.

Keep me posted.

 

[MarySue420]

hey everyone. hoping someone can help me pin point the problem on my plant.

GSC @ DAY 46 (today) (last watered on DAY 40)

-----

3 gallon pro mix
gh trio micro/gro/bloom + cal mag for feeding @ 6.2-6.5ph
2 3500k autocobs @ 25" from the top running 20/4

-----

- saw the progression of the leaf problems today when checking.
- ph has been around 6.2-6.5 for both plants but this is the only one with issue
- havent watered until run off!! so im thinking its nutrient lockout?

i watered her today with 3gal of plain ph water to flush the lockout
- run off was orange! (sorry i didnt test run off.. i should have!)
- 3gallons of water seemd to clear out the soil with run off turning slight yellow/clear

I had a similar issue, seemed to be phosphorus to me, check my thread out on it see if you think its the same issue hun xx

 

[Waira]

- do you have any ppm readings on your dosage, and exactly how much you used of each? Water pH and ppm's to start with,... Oh!- too late now after flush, but I wanted to make sure this wasn't a nute build-up issue,...
Symptoms looks like Ca mostly, but P defc. can present similarly at times, usually with larger patches of necrosis, and you do have purple petioles, a common co-symptom but not reliable because normal color expression can do this as well,... Certainly both are possible at the same time too,...
...your pH mentioned, that's the solution going in right? that's not a reflection of what the actual in-pot pH is, you'll need a pH probe made for this,... Accurate 8 (CWP) is good, or the same unit under a different brand name...
Color was from the tannins in the peat,.... but post flush, now you need to feed ASAP since stuff has been partly stripped out,...

 

[thedailydose]

Ca/Ma needs are exasperated with LED's. I'm currently feeding 6ml/g (GH Cali...) running QB 288's w/ 301b diodes. I have no ir off of these lights, to get leaf surface temperature into an optimal range to facilitate uptake mobility I need to be in the 83-87f range.

Keep me posted.

i think ill up the feed to 4ml calmag next feeding! ill keep you posted .

I had a similar issue, seemed to be phosphorus to me, check my thread out on it see if you think its the same issue hun xx

thanks @MarySue420! will have to double check your thread to compare.

- do you have any ppm readings on your dosage, and exactly how much you used of each? Water pH and ppm's to start with,... Oh!- too late now after flush, but I wanted to make sure this wasn't a nute build-up issue,...
Symptoms looks like Ca mostly, but P defc. can present similarly at times, usually with larger patches of necrosis, and you do have purple petioles, a common co-symptom but not reliable because normal color expression can do this as well,... Certainly both are possible at the same time too,...
...your pH mentioned, that's the solution going in right? that's not a reflection of what the actual in-pot pH is, you'll need a pH probe made for this,... Accurate 8 (CWP) is good, or the same unit under a different brand name...
Color was from the tannins in the peat,.... but post flush, now you need to feed ASAP since stuff has been partly stripped out,...

thanks for the reply @Waira

no ppm reading but i have the dosage/ph that was used:

her feeding @ DAY 40
1a)
- 2ml cal mag
- 2ml micro
- 1ml gro
- 2ml bloom
- 1ml ph down

- ph @ 6.32 (yellow pen)
- ph @ 6.26 (apera pen)
- ph around 6.0-6.5 (vial)

tap water left sitting for 24hrs.
1 gallon of water.
1L watering @10 mins interval. no run off.

-----

flushed her with ph water @ DAY 46 (when this post was created)

i watered her today with 3gal of plain ph water to flush the lockout
- run off was orange! (sorry i didnt test run off.. i should have!)
- 3gallons of water seemd to clear out the soil with run off turning slight yellow/clear

-----

she then received the remaining 1.5g of water (left over from a 4gal mix to feed the SC) @ DAY 47

4gallon mix

- 8ml cal mag (2ml/g)
- 8ml micro (2ml/g)
- 2ml gro (.5ml/g)
- 8ml bloom (2ml/g)
- 4ml ph down

- ph @ 6.44 (yellow pen)
- ph @ 6.48 (apera pen)
- ph around 6.0-6.5 (vial)

- run off tested @ 6.19

-----

i dont have a soil meter yet but ill definitely look into buying one incase anything like this happens again. will be doing the slurry test when the soil dries up so i can dig deep for soil sample! have been reading: 1 to 2 soil/water ratio. mix. let sit for 30mins. test.


here are the 2 plants today @ DAY 51

- no new sick leaves.
- seems to be recovering after the flush/feed

 

[thedailydose]

@TheArchitect @Waira

heres the slurry test on DAY 53 (6 days after last watering)

used this method:


- 1:2 soil and water ratio (i used a shot glass)
- i got soil way deeper closest to wards the bottom about 3/4 down the pot (3 different locations)
- tap water / 24 hrs / phed to as close to 7 as possible
- stirred every 10 mins / waited 30mins for the final test

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14oz cup tap water = @ 8.32ph (yellow) / @ 8.19ph (apera)
+ 1 drop pf ph down = @ 7.02ph (yellow) / @ 7.03ph (apera)

unfiltered result:
@ 6.67ph (yellow) / @ 6.64ph (apera)

(coffee) filtered result:
@ 6.70ph (yellow) / @ 6.79ph (apera)


they look healthier than they did when the problem started! GSC is bouncing back with no new sick leaves.

-----

both plants just got a feeding (on DAY 54) of 1.5gallon each (run off) @ 6.40ph (yellow) / @ 6.46ph (apera)
- 1qt water @ 10mins interval

12ml calmag (upped the feed from 2ml calmag to 4ml per gallon)
6ml micro
1.5 gro
6ml bloom

3gallon mix

 

[Waira]

Well, here's the rub on the readings: you must use RO/Di water or it will skew the results.. Tap has CaCO3 in it, a pH buffering mineral...worse, you pH adjusted it, making even more skewing= .. otherwise you did well with the rest!. but after all this, it looks like the pH is in range, so let's see if things settle out OK,... have symptoms slowed or halted progression?

 

[thedailydose]

Well, here's the rub on the readings: you must use RO/Di water or it will skew the results.. Tap has CaCO3 in it, a pH buffering mineral...worse, you pH adjusted it, making even more skewing= .. otherwise you did well with the rest!. but after all this, it looks like the pH is in range, so let's see if things settle out OK,... have symptoms slowed or halted progression?

damn.... and here i am thinking i did everything correct! i was under the impression that it was better to slurry test using the same type of water thats being put in the plant? (as close to neutral as possible..) otherwise it would have been tested with 8+ ph with tap..

have also been reading that distilled doesnt register right when being ph tested.. (thats why i didint use distilled)
no ro/water system..

problems has stopped developing and old leaves are staying the same. so far everything is looking healthy and moving along nicely. ive also been plucking the older damaged keaves starting from the bottom up so the plant can focus on bud growth instead of leaf repairs.

here they are @ DAY 56