What's causing this

HashFart

HashFart

Well-Known Member
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Hey guys I'm finding myself in a pickle with this fussy plant . The leaf is showing some sort of deficiency whatever it might be nitrogen , iron , sulfar or mag .


The plant is still young and I've been feeding at early veg according to my chart.

My tent temp is 20 with a RH of 55 to 60

I'm in promix HP

Any help on what's going on ?
PXL_20230105_021641630.jpg
Screenshot_20221209-133020.png
 
There's very little magnesium in that brand of grow nutes:

Guaranteed Analysis
Grow A (3-0-0)
Total Nitrogen (N)…………………………….3.0%
0.5% Ammoniacal Nitrogen
2.0% Nitrate Nitrogen
0.5% Urea Nitrogen
Calcium (Ca)……………………………….2.0%
Boron (B)………………………………….0.02 %
Cobalt (Co)…………………………….0.0005%
Copper (Cu)………………………………0.005%
Iron (Fe)………………………………………0.1%
Manganese (Mn)…………………………0.04%
Molybdenum (Mo)…………………….0.002%
Sodium (Na)…………………………………0.1%
Zinc (Zn)……………………………………..0.02%
Derived from calcium nitrate, ammonium nitrate, urea, cobalt nitrate, iron EDTA, sodium borate, sodium molybdate, copper EDTA, manganese EDTA, and zinc EDTA.

Grow B (2-2-5)
Total Nitrogen (N)……………………..2.0 %
0.3% Ammoniacal Nitrogen
1.7% Nitrate Nitrogen
Available phosphate (K2O5)………..2.0%
Soluble Potash (K2O)………………….5.0%
Magnesium (Mg)………………………..0.5 %
Sulfur (S)………………………………….. 0.5%
Derived from potassium nitrate, monopotassium phosphate, magnesium nitrate, ammonium nitrate, and magnesium sulfate.




I'd find a 2-0-0 calmag like botanicare and see if that helps, or you could try a 0-0-0 mix like TPS.
 
InTheShed said:
There's very little magnesium in that brand of grow nutes:

Guaranteed Analysis
Grow A (3-0-0)
Total Nitrogen (N)…………………………….3.0%
0.5% Ammoniacal Nitrogen
2.0% Nitrate Nitrogen
0.5% Urea Nitrogen
Calcium (Ca)……………………………….2.0%
Boron (B)………………………………….0.02 %
Cobalt (Co)…………………………….0.0005%
Copper (Cu)………………………………0.005%
Iron (Fe)………………………………………0.1%
Manganese (Mn)…………………………0.04%
Molybdenum (Mo)…………………….0.002%
Sodium (Na)…………………………………0.1%
Zinc (Zn)……………………………………..0.02%
Derived from calcium nitrate, ammonium nitrate, urea, cobalt nitrate, iron EDTA, sodium borate, sodium molybdate, copper EDTA, manganese EDTA, and zinc EDTA.

Grow B (2-2-5)
Total Nitrogen (N)……………………..2.0 %
0.3% Ammoniacal Nitrogen
1.7% Nitrate Nitrogen
Available phosphate (K2O5)………..2.0%
Soluble Potash (K2O)………………….5.0%
Magnesium (Mg)………………………..0.5 %
Sulfur (S)………………………………….. 0.5%
Derived from potassium nitrate, monopotassium phosphate, magnesium nitrate, ammonium nitrate, and magnesium sulfate.




I'd find a 2-0-0 calmag like botanicare and see if that helps, or you could try a 0-0-0 mix like TPS.
Click to expand...
Could he use Epsom Salt ?
 
HashFart said:
Hey guys I'm finding myself in a pickle with this fussy plant . The leaf is showing some sort of deficiency whatever it might be nitrogen , iron , sulfar or mag .


The plant is still young and I've been feeding at early veg according to my chart.

My tent temp is 20 with a RH of 55 to 60

I'm in promix HP

Any help on what's going on ?
PXL_20230105_021641630.jpg
Screenshot_20221209-133020.png
Click to expand...
Promix hp is a soilless medium.
When I ran it I fed full strength nutrients, next day water, feed , water, feed, water...
All at 5.8 ph to run off every day.
I ran it like coco just alternated water between feedings.
With calmag in the water first.
But definitely at 5.8 ph.




#Vivosun #Love What You Grow
Bill284 :cool:
 
Thanks alot guys. I feel like InTheShed hit the nail on the head with a screen shot worthy comment . I might need to find a bottle with some mag for this one fussy plant for that all the other plants seem fine. I never used Epsom salts before Buds Bunny I'll need to educate myself on that . Thanks brother Bill I've been getting the ph good I've just been feeding every water I'm going to have mine hands full with the autos and having plants at different stages of life seems like they all will need a special mixture for every feed ..... Let's just hope I can find some sort of cal mag
 
Buds Buddy said:
Could he use Epsom Salt ?
Click to expand...
Oh good idea! Still might need the calcium later though given the low number there.
Bill284 said:
Promix hp is a soilless medium.
When I ran it I fed full strength nutrients, next day water, feed , water, feed, water...
All at 5.8 ph to run off every day.
I ran it like coco just alternated water between feedings.
With calmag in the water first.
But definitely at 5.8
Click to expand...
Promix is a buffered medium and doesn't need pH adjusted water according to the manufacturer. No harm in doing it but I don't think that's the source of the issue here.

HashFart said:
Let's just hope I can find some sort of cal mag
Click to expand...
I'll be back in a couple of hours and give you some numbers for Epsom salt to add to your mix. It should help for now anyway. Probably a good idea to have some calmag available later though.
 
InTheShed said:
Oh good idea! Still might need the calcium later though given the low number there.

Promix is a buffered medium and doesn't need pH adjusted water according to the manufacturer. No harm in doing it but I don't think that's the source of the issue here.


I'll be back in a couple of hours and give you some numbers for Epsom salt to add to your mix. It should help for now anyway. Probably a good idea to have some calmag available later though.
Click to expand...
I'll try and grab this product called callnesium after work .... I'll need to water tomorrow I'll post back here if I remember and we will see if it corrects the issue , are you talking just plain Epsom salt
 
HashFart said:
I'll try and grab this product called callnesium after work .... I'll need to water tomorrow I'll post back here if I remember and we will see if it corrects the issue , are you talking just plain Epsom salt
Click to expand...
I am. Magnesium sulfate, and I'll be back in a couple of hours and give you actual numbers!
 
InTheShed said:
Oh good idea! Still might need the calcium later though given the low number there.

Promix is a buffered medium and doesn't need pH adjusted water according to the manufacturer. No harm in doing it but I don't think that's the source of the issue here.


I'll be back in a couple of hours and give you some numbers for Epsom salt to add to your mix. It should help for now anyway. Probably a good idea to have some calmag available later though.
Click to expand...
Just knew it wasn't soil so I thought it best practice to set it.
Never had any issues running it that way.
Put calmag in the water first.
Then full strength nutrients lastly set ph to 5.8.
Maby it didn't need set I'm not sure.
But I never had a single issue.




#Vivosun #Love What You Grow
Bill284 :cool:
 
Until you get the calnesium, a full strength veg blend would be:

Grow A: 11.5ml/gal
Grow B: 12ml/gal
Epsom salt: 0.6ml/gal

Once you get the calnesium, you can drop the epsom salt and go with this for full strength veg:

Grow A: 3.5ml/gal
Grow B: 12.4ml/gal
calnesium: 6.3ml/gal

For younger plants you just mix the above and dilute with water to cut the strength. I usually get to full strength by the third week though. How old is yours?
 
InTheShed said:
Until you get the calnesium, a full strength veg blend would be:

Grow A: 11.5ml/gal
Grow B: 12ml/gal
Epsom salt: 0.6ml/gal

Once you get the calnesium, you can drop the epsom salt and go with this for full strength veg:

Grow A: 3.5ml/gal
Grow B: 12.4ml/gal
calnesium: 6.3ml/gal

For younger plants you just mix the above and dilute with water to cut the strength. I usually get to full strength by the third week though. How old is yours?
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Thanks brother it's 3 weeks . I'll get some callnesium today hopefully , why are your numbers so far off the chart ?
 
HashFart said:
Thanks brother it's 3 weeks . I'll get some callnesium today hopefully ,
Click to expand...
Glad to help HF!
HashFart said:
why are your numbers so far off the chart ?
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Their numbers are in ml/L, so that's part of the reason. But mostly it's because I'm working of a different set of requirements for full veg.

Their recommendation of 1.25ml/L gives you 62-11-52 with Ca at 25 and Mg at 6.25, all of which seem very low to me.

I would be closer to 120-20-135 with Ca at 68 and Mg at 34. I'm trying to get you there without blowing out the ammoniacal nitrogen (which isn't as useful as nitrate) that comes in the Grow A.
 
InTheShed said:
Glad to help HF!

Their numbers are in ml/L, so that's part of the reason. But mostly it's because I'm working of a different set of requirements for full veg.

Their recommendation of 1.25ml/L gives you 62-11-52 with Ca at 25 and Mg at 6.25, all of which seem very low to me.

I would be closer to 120-20-135 with Ca at 68 and Mg at 34. I'm trying to get you there without blowing out the ammoniacal nitrogen (which isn't as useful as nitrate) that comes in the Grow A.
Click to expand...
I understand that your talking gallons and the chart is Canadian , it's just your number and the chart are still off but it seems low to you , maybe I'll ramp it up to what you suggest ..... I think callnesium is 2.0.0 I don't wanna have nitro threw the roof brother
 
HashFart said:
I understand that your talking gallons and the chart is Canadian , it's just your number and the chart are still off but it seems low to you , maybe I'll ramp it up to what you suggest ..... I think callnesium is 2.0.0 I don't wanna have nitro threw the roof brother
Click to expand...
I factored in the calnesium at the 2-0-0 listed on their website, with Ca at 3 and Mg at 1.

If you're more comfortable using manufacturer's numbers that's fine too, but go to full veg with both the A and B as well as whatever calnesium recommends. I didn't look for a feeding chart for that.
 
InTheShed said:
Grow A: 3.5ml/gal
Grow B: 12.4ml/gal
calnesium: 6.3ml/gal
Click to expand...
I'll do this as a feed if I get the callnesium brother , there chart seems weak to me as well compared to other nutrients let's see if I can get this plant up to snuff it's the only one I got like this , hopefully it doesn't end up being a male
 
Indeed!
 
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