Finding it hard to diagnose.

[gazza89]

Hi there, growing 3 auto ultimates by Dutch passion, aside from the fact the plants are growing completely different shapes and sizes , the leaves are showing signs of problems, I'll add a few pics of them and see what you guys think.
Growing in canna Coco pro+
full shogun range of nutes
6 x migro 100w lights
Letting pH drift between 5.5 and 6.5
Decent air movement
Hand watering once per day till runoff

 

[macsnax]

Too high of ppm, drop it down about 50-100 points. In the pics there's some pots that look dried out, you don't want to let coco dry out. It messes with the cation exchange capacity (CEC) leading to funny looking leaves/plants. I try to wait until top layer is just starting to dry and then feed. And I feed my coco at 6.3 and it seems better than dropping it low like dwc, I get lush plants with fast growth rates anyway.

 

[Hank Mardukas]

Those pots you're using will make them dry out faster too. Great for your roots but you gotta keep them watered.

 

[Hank Mardukas]

Are you using Cal mag?

 

[gazza89]

Too high of ppm, drop it down about 50-100 points. In the pics there's some pots that look dried out, you don't want to let coco dry out. It messes with the cation exchange capacity (CEC) leading to funny looking leaves/plants. I try to wait until top layer is just starting to dry and then feed. I feed my coco at 6.3 and it seems better than dropping it low like dwc, I get lush plants with fast growth rates anyway.

Those pots you're using will make them dry out faster too. Great for your roots but you gotta keep them watered.

Ah gotcha, i'll have to figure out a new way of watering twice a day then , working makes it difficult XD. I have dropped the feed to only 1ml per litre of everything (calmag, a+b, boost) and 0.2m per litre of katana roots, just got a ppm meter today so will see how high my feed going in is and the runoff.

 

[macsnax]

Ah gotcha, i'll have to figure out a new way of watering twice a day then , working makes it difficult XD. I have dropped the feed to only 1ml per litre of everything (calmag, a+b, boost) and 0.2m per litre of katana roots, just got a ppm meter today so will see how high my feed going in is and the runoff.

Ya keep them a lil more wet. If you're not around enough look into blumats. I just started using them recently myself and it has me wondering why it took me so long to try them. I'm getting even faster growth with less effort. And don't worry about checking runoff unless you're having some more serious issues, often it will lead to you chasing your tail over nothing.

 

[xtsho]

Ya keep them a lil more wet. If you're not around enough look into blumats. I just started using them recently myself and it has me wondering why it took me so long to try them. I'm getting even faster growth with less effort. And don't worry about checking runoff unless you're having some more serious issues, often it will lead to you chasing your tail over nothing.

I thought the same thing after using blumats. Why did it take me so long? Sure beats hand watering or messing with a drip system hooked up to pumps timers, worrying about collecting runoff, etc...

 

[gazza89]

Ya keep them a lil more wet. If you're not around enough look into blumats. I just started using them recently myself and it has me wondering why it took me so long to try them. I'm getting even faster growth with less effort. And don't worry about checking runoff unless you're having some more serious issues, often it will lead to you chasing your tail over nothing.

I thought the same thing after using blumats. Why did it take me so long? Sure beats hand watering or messing with a drip system hooked up to pumps timers, worrying about collecting runoff, etc...

Oh haven't heard of bluemats yet , i'll look into those for sure, But just checked the ppm of my feed before watering and it's at 700ppm , does that sound about right for an autoflower just starting flowering?

 

[macsnax]

I thought the same thing after using blumats. Why did it take me so long? Sure beats hand watering or messing with a drip system hooked up to pumps timers, worrying about collecting runoff, etc...

I'm loving them man. I was out of town for 8 days and came back to more growth than I would see in that time if I was there hand watering, lol.

 

[macsnax]

Oh haven't heard of bluemats yet , i'll look into those for sure, But just checked the ppm of my feed before watering and it's at 700ppm , does that sound about right for an autoflower just starting flowering?

Opinions on how to feed vary. In early flower I'm closer to 600, with autos idk haven't grown any in a long time. The burnt tips on the one plant indicate too high of ppm though.

 

[gazza89]

Opinions on how to feed vary. In early flower I'm closer to 600, with autos idk haven't grown any in a long time. The burnt tips on the one plant indicate too high of ppm though.

Yeah i've dropped it back down , god knows what it was when i was feeding before, i was feeding pretty much double what i am now when i noticed the burns, so halved it and things seem to have stabilised for now. i'll drop it another 100 or so like you said if it get's any worse, but glad to know it was probably just a feeding problem , and yeah i agree that i need to water more lol.
Much appreciated both of you guys <3

 

[Hank Mardukas]

I think your plants look mg deficient which could be pH lockout. You're letting it drift 5.5-6.5 you should try keeping it around 5.8-6.0 too low and you lockout mg

 

[gazza89]

Opinions on how to feed vary. In early flower I'm closer to 600, with autos idk haven't grown any in a long time. The burnt tips on the one plant indicate too high of ppm though.

You wouldn't have a link to the bluemat thing you've got have you , tried to search it but there's so many :O (not sure if links are allowed)

 

[gazza89]

I think your plants look mg deficient which could be pH lockout. You're letting it drift 5.5-6.5 you should try keeping it around 5.8-6.0 too low and you lockout mg

Yeah i thought that because of the spots on a couple of leaves, just watered now with a Ph of 6 , i'll keep it around there like you say for a week or so and see how things go <3

 

[macsnax]

Yeah i've dropped it back down , god knows what it was when i was feeding before, i was feeding pretty much double what i am now when i noticed the burns, so halved it and things seem to have stabilised for now. i'll drop it another 100 or so like you said if it get's any worse, but glad to know it was probably just a feeding problem , and yeah i agree that i need to water more lol.
Much appreciated both of you guys <3

If those burns occurred before you dropped it by half, you're probably good to go.

 

[macsnax]

You wouldn't have a link to the bluemat thing you've got have you , tried to search it but there's so many :O (not sure if links are allowed)

Check out sustainable village

 

[gazza89]

Will do man , thanks, gunna be weird not having to water the plants by hand

 

[macsnax]

Yeah i thought that because of the spots on a couple of leaves, just watered now with a Ph of 6 , i'll keep it around there like you say for a week or so and see how things go <3

If you're running led's you're plant will go through a bit of Mg. Coco in general needs more of it, so that would be two things that are causing your plants to go through more Mg.

 

[macsnax]

Will do man , thanks, gunna be weird not having to water the plants by hand

Once you get them dialed you're going to be in love, lol.

 

[gazza89]

If you're running led's you're plant will go through a bit of Mg. Coco in general needs more of it, so that would be two things that are causing your plants to go through more Mg.

at the minute i'm giving 1ml of calmag per litre, same as the base nutes, would it be worth adding more calmag just because i'm growing in coco and using led's ?