N toxicity?

[Raku]

Thinking I have to much Nirtogen, but not really sure. Also my veg plants fan leaves are twisting... can anyone help? not sure how to use this website that well yet so please tag someone who can help

 

[BigCube]

Doesnt look like n toxicity to me. The tips are the first things to burn with n overdose.

I'd be more inclined to think PH or heat issues. If you can, please list out your stats in ph rh temp nutes soil.. stuff like that.

 

[Raku]

ph is 5.9
RH is 40%-50%
temp 74-78 degrees
advanced nutrients
coco with some perlite

 

[MIMedGrower]

Ppm’s? Looks like nutrient stress starting. Blurry but i think i see tip burn. Maybe back off on the nutrients.

Also sometimes the fans can be responsible for the weird downward curling.

 

[Jimster]

Ppm’s? Looks like nutrient stress starting. Blurry but i think i see tip burn. Maybe back off on the nutrients.

Also sometimes the fans can be responsible for the weird downward curling.

Nitrogen excesses can cause leaf clawing and excess P and K can cause leaf twisting. I would ease off the nutes for a few days. Your plants are relatively small for needing too much chow.

 

[MIMedGrower]

Nitrogen excesses can cause leaf clawing and excess P and K can cause leaf twisting. I would ease off the nutes for a few days. Your plants are relatively small for needing too much chow.

Right on!

 

[Raku]

ppm is just over 1250, not sure if it’s to much or to little something. all the excess/deficient charts ive been reading has signs of a little bit of everything it seems like -_- thinking a flush might help but it won’t if it’s a deficiency right only with excess?

 

[Raku]

here are some more photos taken through vision sun protective shades to try and get the color more accurate. some are pale, rusty, yellow and darkish. i raised my lights about 8 inches or more, two 1000 watt hps and two 1500 watt purple led, hit them with some enzymes tonight but still wondering if i should just flush them out

 

[MIMedGrower]

here are some more photos taken through vision sun protective shades to try and get the color more accurate. some are pale, rusty, yellow and darkish. i raised my lights about 8 inches or more, two 1000 watt hps and two 1500 watt purple led, hit them with some enzymes tonight but still wondering if i should just flush them out

I would run fresh water through to good runoff and see what comes out. Then depending on results i would feed a low to medium dose a a complete balanced grow nute. Looks like pk buildup lockout.

 

[02trueblue]

^ I'd do what he said

 

[Raku]

pure RO water for flush

1st plant: first run off was PPM 230, PH 6.2, second run off of 1st plant was PPM 190, PH 6.3

2nd plant: first run off PPM 230, PH 6.5, second run off of 2nd plant was PPM 150, PH 6.4

3rd plant: first run off PPM 260 PH 6.4, second run off PPM 210 PH 6.4

4th plant: first run off PPM 300 PH 6.1, second run off PPM 220 PH 6.1

i have a few more to go

 

[Raku]

5th plant: first ppm 330 ph 6.1,
second ppm 270 ph 6.2

6th plant: first ppm 270 ph 6.3 second ppm 240 ph 6.4

my other row of 6 aren’t showing any signs like the row i just flushed, except a couple fan leaves showing the claw with somewhat of a shrivelled look, going to get some run off of those ones to tho just not as much

 

[MIMedGrower]

pure RO water for flush

1st plant: first run off was PPM 230, PH 6.2, second run off of 1st plant was PPM 190, PH 6.3

2nd plant: first run off PPM 230, PH 6.5, second run off of 2nd plant was PPM 150, PH 6.4

3rd plant: first run off PPM 260 PH 6.4, second run off PPM 210 PH 6.4

4th plant: first run off PPM 300 PH 6.1, second run off PPM 220 PH 6.1

i have a few more to go

Didnt you say 1250 ppm in the first post? What were you referring to?

Cause your runoff is only a bit more than tap water ppm.

 

[MIMedGrower]

5th plant: first ppm 330 ph 6.1,
second ppm 270 ph 6.2

6th plant: first ppm 270 ph 6.3 second ppm 240 ph 6.4

my other row of 6 aren’t showing any signs like the row i just flushed, except a couple fan leaves showing the claw with somewhat of a shrivelled look, going to get some run off of those ones to tho just not as much

Havent seen pics but sounds like they are headed the same way as the problem plants. Clawing and wrinkling are nute stress. But i cant tell if they are hungry or overfed now.

 

[Raku]

my ppm going into the pot as a feed was 1250, was the recommended dose on the advanced nute bottle 4ml per liter

 

[Raku]

wondering if i need to just bump up to 2 feeds a day starting to think they’re starved ?

 

[MIMedGrower]

Wish i had asked but is this coco? If so we need a coco grower to advise at this point. I have only used potting soil.

 

[Raku]

yes coco with some perlite

 

[Jimster]

wondering if i need to just bump up to 2 feeds a day starting to think they’re starved ?

If your PPMs are as low as you say, the problem doesn't sound like overfeeding. Your Ph values look pretty good and your light sounds more than adequet unless too close. Did you just start using any new lights recently? I'm not familiar with your nutrient, but I would try to get a general purpose fertilizer with some, but not a ton, of Nitrogen, simply because you are in flowering (otherwise I'd use 20-20-20). You aren't showing Nitrogen toxicity, but bad P/K ratios can cause lockouts... not sure if it would show up on a PPM meter like some things do. Something is not adding up, though... if you are putting 1250 PPms into the pot and only seeing 260 coming out, that is an awful big drop.
On a side note, they could also be approaching the end of flowering, which often causes leaves, especially the lower fan leaves, to yellow and drop off. With the small pots that they are in, the nutrient reserve isn't too high an they might just need a snack... unless it is just old age!

 

[MIMedGrower]

yes coco with some perlite

Well we just bumped your thread a few times. Maybe someone with coco feeding experience will chime in.

Many say feeding multiple times a day is best but you would want to cut down those ppm’s if feeding more often.