Can anyone help me? Think it’s potassium deficiency

[Jays first time grower]

Hello I have 4 northern lights auto from sensi seeds they were all doing well now in to week 8 started flowering week 7 but they are all getting this on leaves is it potassium def my ph is 7.0 and in soil help would be much appreciated thanks

 

[Jays first time grower]

This is what plant looks like am I worrying

 

[StoneOtter]

Hi Jay, welcome! Being in week 8 they seem not too autoish to me. Did pistols start in week 7? What I see looks like a cal/mag issue( @Emilya do you think?) after a long veg. Wait for other opinions but to me they look like they may be photo plants in need of some cal/mag and a light flip.

 

[PE636]

When you say ph is 7 are you referring to your water? If so it should be more like 6.3 going into soil.

 

[Jays first time grower]

When you say ph is 7 are you referring to your water? If so it should be more like 6.3 going into soil.

Soil is 7 ph

 

[Jays first time grower]

This is what plant looks like am I worrying

Hi Jay, welcome! Being in week 8 they seem not too autoish to me. Did pistols start in week 7? What I see looks like a cal/mag issue( @Emilya do you think?) after a long veg. Wait for other opinions but to me they look like they may be photo plants in need of some cal/mag and a light flip.

hello and yes pistols started at week 7 and they are northern lights automatic from sensi seed they are in soil and ph of soil is 7 just want to know what’s a matter so can sort out

 

[Jays first time grower]

They are 18hrs under led

 

[Emilya Green]

I think I agree with the Otter... looks like magnesium to me. I would treat with some calmag first, just to see if it stops the progress of this. If you are feeding lightly, I would up it just a bit at this point, the plant is getting hungrier as it gets bigger. Soil pH is exactly where you want it at 6.8-7.0... no worries there, just water at 6.3 pH each time so you can take advantage of that quick drift.

 

[Jays first time grower]

I think I agree with the Otter... looks like magnesium to me. I would treat with some calmag first, just to see if it stops the progress of this. If you are feeding lightly, I would up it just a bit at this point, the plant is getting hungrier as it gets bigger. Soil pH is exactly where you want it at 6.8-7.0... no worries there, just water at 6.3 pH each time so you can take advantage of that quick drift.

Thank you to you both I will get and try cal mag and see what happens thanks for advice

 

[StoneOtter]

They are 18hrs under led

That's perfect for the auto grow. I just don't see flowers like I would in my auto grows at this point. Hence my thought of them being photos. 12 hours of light will bring flowers in a photo. I'll look for some pics of mine at that time.

 

[Jays first time grower]

That's perfect for the auto grow. I just don't see flowers like I would in my auto grows at this point. Hence my thought of them being photos. 12 hours of light will bring flowers in a photo. I'll look for some pics of mine at that time.

I thought auto don’t need lighting schedule as they are auto that have had 18 hours of light since germination so you saying I should go to a 12 hour light schedule

 

[Jays first time grower]

Thank you to you both I will get and try cal mag and see what happens thanks for advice

Hello again should I change my lighting schedule as well as ott

Thank you to you both I will get and try cal mag and see what happens thanks for advice

should I change lighting schedule like otterman is saying should be 12 hours not 18 thanks

 

[StoneOtter]

I thought auto don’t need lighting schedule as they are auto that have had 18 hours of light since germination so you saying I should go to a 12 hour light schedule

No. I'm saying the seeds might be photo's by mistake. Here is a pic of one of mine at 8 weeks.

 

[StoneOtter]

At some point if you think the plants aren't flowering, try going to 12/12 lighting. It will get them going. 8 weeks is a long time for them to not be full of immature flower in my opinion. But I can't see your plant clearly. Edit: On second thought, one pic is clear and I'd go with the 12 light. In a few days you'll see pistols galore. Be sure to find some cal/mag for the leaf issue.

 

[StoneOtter]

Then expect a 3 week fast growth period. "The stretch" it's when all the bud sites get made and filled up.

 

[Jays first time grower]

Then expect a 3 week fast growth period. "The stretch" it's when all the bud sites get made and filled up.

Hello mate there from sensi seed by white label so not shit seeds but seeing your photo on week 8 has got me worried now as mine have only slowly started flowering on week 7 last week basically and the sugar leaves still small I should have only another 7 weeks left before harvest they are all over 13 inch but just feel very slow at growing pistols are coming out at nodes and where cola is on top just no buds forming yet

 

[StoneOtter]

Hello mate there from sensi seed by white label so not shit seeds but seeing your photo on week 8 has got me worried now as mine have only slowly started flowering on week 7 last week basically and the sugar leaves still small I should have only another 7 weeks left before harvest they are all over 13 inch but just feel very slow at growing pistols are coming out at nodes and where cola is on top just no buds forming yet

They're healthy so no worries. Sometimes things seem to go in slow motion. Give em some more time and see. I found them on the sensi site: "It’s autoflowering, and the flowering time is relatively speedy – around 60 days in total, with an 11-13-week life cycle". So with that info I'm probably wrong. 13 weeks can be their total time approx. I see your point. So a 60 day count from when they start flowering should bring you there, or close. That's a pretty long run for autos. So stay the course Jay and keep your eye on them like you have been. @Jays first time grower @ me or any of us any time and it will call.

 

[Jays first time grower]

They're healthy so no worries. Sometimes things seem to go in slow motion. Give em some more time and see. I found them on the sensi site: "It’s autoflowering, and the flowering time is relatively speedy – around 60 days in total, with an 11-13-week life cycle". So with that info I'm probably wrong. 13 weeks can be their total time approx. I see your point. So a 60 day count from when they start flowering should bring you there, or close. That's a pretty long run for autos. So stay the course Jay and keep your eye on them like you have been. @Jays first time grower @ me or any of us any time and it will call.

Thanks mate this is my first proper grow think its first time nerves and worry I will give cal mag as advised for leaf def thanks for listening and giving time to all who have given advice thanks

 

[StoneOtter]

Thanks mate this is my first proper grow think its first time nerves and worry I will give cal mag as advised for leaf def thanks for listening and giving time to all who have given advice thanks

I still get the nerves some days, maybe it keeps us sharp. Yeah, that's it!

 

[Rheaun]

Is it fighting off a disease or virus? I read to pull off any damaged leaves, usually older growth. Never done it but can even supplement H2O2 and water to help it along.