Downward curling leaves

[rr14]

I have a plant that has downward curling leaves on the top portion. I am currently in week 4 of veg with nutes at approx 1200 ppm. I had them at 750 ppm in week 3 and 550 in week 2. It is a hydro setup under a 400 hps going 18 hours a day. I am using reverse osmosis water. The temp with the light on are usually about 85 or so. I am running co2 about half the time. The plants are about 2 to 2 1/2 feet tall.

I am using a brand of stuff called grow more which is supposed to be like the gh flora series.

Any suggestions.

 

[rr14]

 

[Guest423]

looks like your nutes are too strong and the temps are a little high for hydro.

 

[Guest]

I've found out your symptoms of clawed leaves can happen from three things
1)ph
2) over ferting
3) under ferting

looks like your case may be overferting

 

[rr14]

I'm starting to think so because i didn't notice it before adding more nutes.

 

[rr14]

could this be a lack of humidity? The room feels not humid at all.

 

[Guest]

That's a surplus of Nitrogen. You've got The Claw for sure. I'd be skeptical about things that are "Supposed to Be Like"... I have never heard of Grow More. Yeah 85 is about 10 degrees higher than you want it too. 450 PPM is kind of a big jump. Flush those puppies for a few days and try a weaker solution.

 

[10k]

yikes

1200 ppm already...whoa nelly slow down on the strength bumps, the kids arent ready yet.

Important question...
If its supposed to be the same as gh flora, are you mixing the micro into the water first, then the grow, then bloom (like gh flora) ?
If not, then that would explain why they look like they're suffering some lockouts.

What ratio are you running btw? 321 (g,m,b) ?

 

[Guest]

How are you checking your c02 levels???? I just had a problem with a c02 overdose and it caused the same conditions that you have going on. The claw can also be caused due to poor air quality and in your case I'm willing to bet it is way too much c02. Just my .02

 

[rr14]

yikes

1200 ppm already...whoa nelly slow down on the strength bumps, the kids arent ready yet.

Important question...
If its supposed to be the same as gh flora, are you mixing the micro into the water first, then the grow, then bloom (like gh flora) ?
If not, then that would explain why they look like they're suffering some lockouts.

What ratio are you running btw? 321 (g,m,b) ?

I was using 4 2 1 of grow to micro to bloom.

On the info sheet I have, it doesn't say anything about mixing the micro first, then grow and then bloom. I was doing it grow, bloom and then micro. So that does make a difference?

It really does look like there are some lockouts on my plants based on what I have seen so far. It looks like calcium and magnesium have been locked out so far.

Also, I'll back on the nutes a bit.

 

[10k]

I was using 4 2 1 of grow to micro to bloom.

On the info sheet I have, it doesn't say anything about mixing the micro first, then grow and then bloom. I was doing it grow, bloom and then micro. So that does make a difference?

Absolutely it makes a difference. If these nutes are similar to gh flora, the micro must ALWAYS be the first chem mixed into the water. Otherwise all kinds of valuable elements from all three bottles are locked out of the nutes themselves and totally unavailable to the plants.

I advise you change the res immediatly, right now your res is somewhat poisonous to the plants. I'd suggest going with the old tried and true formula for beginners using gh flora (or gh flora generic knock offs) in hydro...
Which is: (expressed below as g,m,b but mixed in the order of micro first, then grow, then bloom)
a 3-2-1 ratio for vegging.
2-2-2 ratio for the first two weeks (three weeks for sativas) of flowering.
Then finishing the flowering with a 1-2-3 ratio.

Also...You might want to add some additional Mg (gh flora has always been lacking enough Mg for cannabis), by adding @ 1/8th to 1/4 teaspoon per res gallon of epsom salts. (depending on how Mg hungry the plants show themselves to be)

hth and good luck,
10k

 

[Guest]

Thanks GM ... (As Herb adds OD on co2 and poor air quality to the list of claw effect culprits) Good to know if I ever roll with the Dioxide.

 

[rr14]

immediately changed the res and went with 10k's recommendation. I added 1/2 teaspoon of epsom salt to 4 gallons of h20. I got the water ph to about low 6's prior to adding the nutes. I added the micro first and shook it up well to mix.

my co2 in the flower setup is controlled by a ppm monitor. It is set at 1400 ppm for the last 12 hours of the lights being on for 18 hours. It is only on for 12 hours because it is setup to hit the flowering plants too at that time. Also, temps are lower with only the veg room light on.

thanks for everyone's input. I learned a bit here. I'll post some photos once the plants hopefully bounce back.

 

[rr14]

the "claw" is still present on the leaves previously effected. All the new growth is looking awesome. Is this normal or should those leaves bounce back too?

 

[Guest]

this doesnt happen to be blueberry does it? cause blueberry has the curly claw leaves

 

[Guest]

Clawed leaves will not bounce back, rr14, they'll stay the same and/or die eventually

 

[rr14]

cool. thanks for the info. I'll trim them.