Nutrient Burn at Low Nutrient Concentration? - Cannabis Infirmary - International Cannagraphic Magazine Forums

swimman · 01-08-2018, 08:30 AM

5 Gallon soil grow
40/40/20 ProMix-Perlite-EWC Mix w/ 1.5tbsp dolomite per gallon of soil
Slow growing, even slower drinking (watered once in the last three weeks without signs of drooping)
Recently given Botanicare nutrients as follows per gallon @ pH 6.5

5.5ml Pro Grow
2.5ml Cal-Mag
7.5ml Liquid Karama
2ml Hygrozyme

Showing tip burn on newer growth as well as some clawing and twisting. They're small, probably 12-16 inches in height with 4 shoots each.

Prior to this watering all they've received is plain tap since transplant. I don't understand what could be causing their sensitivity.

bsgospel · 01-08-2018, 01:53 PM

Let's see a pic or two.

Yellowing leaves/funky stems?

I don't see much micro-nutrient presence in this recipe...CalMg is a bit low

pH is a tick high for my preference but 6.5 isn't shooting the moon. For botanicare, I roll between 5.8 and 6.4 for the life of the plant.

How were the roots looking when you transplanted them?

And which pro-mix blend are you using? EWC goes a long way anyway but your pro-mix might have some other amendments already. A lot of pro-mix blends are heavier in peat moss than others and behave differently than potting soil.

bsgospel · 01-08-2018, 01:55 PM

Showing tip burn on newer growth

This is what would make me think to up the calmg and add some micro-nutrients.

mowood3479 · 01-08-2018, 02:08 PM

Your worm castings could be too hot...

Pro Headies · 01-08-2018, 03:33 PM

Check your promix ppm. There has been some batches from around july with abnormally high ppm straight out of the bag. Im not sure what is in it to cause the high ppm, ive seen 1400ppm when it use to be around 400 for last 10 years or so. This was promix hp.

slownickel · 01-08-2018, 04:26 PM

Promix is all over the place.

Add gypsum real quick. In 5 gallons, you can easily add 100 grams of gypsum.

There is no phosphorus in your program. Some soluble P would help, bone meal would help a lot.

If it is taking forever to dryout, your mix is way too heavy.

WaxyTaxi · 01-08-2018, 05:09 PM

Quote:

Originally Posted by swimman

5 Gallon soil grow
40/40/20 ProMix-Perlite-EWC Mix w/ 1.5tbsp dolomite per gallon of soil
Slow growing, even slower drinking (watered once in the last three weeks without signs of drooping)
Recently given Botanicare nutrients as follows per gallon @ pH 6.5

5.5ml Pro Grow
2.5ml Cal-Mag
7.5ml Liquid Karama
2ml Hygrozyme

Showing tip burn on newer growth as well as some clawing and twisting. They're small, probably 12-16 inches in height with 4 shoots each.

Prior to this watering all they've received is plain tap since transplant. I don't understand what could be causing their sensitivity.

did you water to runoff?

also what strain

swimman · 01-09-2018, 12:15 AM

Quote:

Originally Posted by bsgospel

Let's see a pic or two.

Yellowing leaves/funky stems?

I don't see much micro-nutrient presence in this recipe...CalMg is a bit low

pH is a tick high for my preference but 6.5 isn't shooting the moon. For botanicare, I roll between 5.8 and 6.4 for the life of the plant.

How were the roots looking when you transplanted them?

And which pro-mix blend are you using? EWC goes a long way anyway but your pro-mix might have some other amendments already. A lot of pro-mix blends are heavier in peat moss than others and behave differently than potting soil.

What worries me about adding more CalMag is that it has 2% N and I'm seeing clawing which indicates a N overdose.

I'm just using standard Pro Mix, not the amended variety.

swimman · 01-09-2018, 12:18 AM

Quote:

Originally Posted by WaxyTaxi

did you water to runoff?

also what strain

Yes I water until I see a decent amount of runoff.

Growing Blue Dream and Skunk.

Douglas.Curtis · 01-09-2018, 12:23 AM

Use epsom salt for mag problems. It only has additional sulfur (magnesium sulfate) which is also used by cannabis for terpene production. Good stuff.

Most 'burn' I've experienced (and I pretty much only use low nutrient strengths) happens because of pH problems.

01-08-2018, 08:30 AM	#1
swimman Newbie Join Date: Apr 2017 Posts: 31	Nutrient Burn at Low Nutrient Concentration? 5 Gallon soil grow 40/40/20 ProMix-Perlite-EWC Mix w/ 1.5tbsp dolomite per gallon of soil Slow growing, even slower drinking (watered once in the last three weeks without signs of drooping) Recently given Botanicare nutrients as follows per gallon @ pH 6.5 5.5ml Pro Grow 2.5ml Cal-Mag 7.5ml Liquid Karama 2ml Hygrozyme Showing tip burn on newer growth as well as some clawing and twisting. They're small, probably 12-16 inches in height with 4 shoots each. Prior to this watering all they've received is plain tap since transplant. I don't understand what could be causing their sensitivity.
	Quote

01-08-2018, 01:53 PM	#2
bsgospel Member Join Date: Apr 2014 Posts: 398	Let's see a pic or two. Yellowing leaves/funky stems? I don't see much micro-nutrient presence in this recipe...CalMg is a bit low pH is a tick high for my preference but 6.5 isn't shooting the moon. For botanicare, I roll between 5.8 and 6.4 for the life of the plant. How were the roots looking when you transplanted them? And which pro-mix blend are you using? EWC goes a long way anyway but your pro-mix might have some other amendments already. A lot of pro-mix blends are heavier in peat moss than others and behave differently than potting soil. __________________ It's time for a revolution, but probably not in the terms that people imagine it. The word conjures up images of— a modern day version of peasants going into the street with their pitch forks to go after the bad guy who lives in a big house and we're gonna get that son-of-a-bitch and we'll take all the stuff from him and we'll give it to the workers. That's not the kind of revolution I had in mind. I thought that it might be nice if it was handled a little bit more modern and efficient way, without people getting slaughtered. It's a matter of infiltration…The people who are in control of the media, the government that run the lives of the average person in the street. They aren't doing a good job 'cause they don't really care. The potential is there in the younger generation. Right now they’re not really interested. Their political involvement is on a very superficial basis. They go out for the social aspects of a march or a rally rather than for what it could possibly accomplish. -FZ
	Quote 1 members found this post helpful.

01-08-2018, 01:55 PM	#3
bsgospel Member Join Date: Apr 2014 Posts: 398	Showing tip burn on newer growth This is what would make me think to up the calmg and add some micro-nutrients. __________________ It's time for a revolution, but probably not in the terms that people imagine it. The word conjures up images of— a modern day version of peasants going into the street with their pitch forks to go after the bad guy who lives in a big house and we're gonna get that son-of-a-bitch and we'll take all the stuff from him and we'll give it to the workers. That's not the kind of revolution I had in mind. I thought that it might be nice if it was handled a little bit more modern and efficient way, without people getting slaughtered. It's a matter of infiltration…The people who are in control of the media, the government that run the lives of the average person in the street. They aren't doing a good job 'cause they don't really care. The potential is there in the younger generation. Right now they’re not really interested. Their political involvement is on a very superficial basis. They go out for the social aspects of a march or a rally rather than for what it could possibly accomplish. -FZ
	Quote

01-08-2018, 02:08 PM	#4
mowood3479 Senior Member Join Date: Jan 2011 Location: lima, peru Posts: 1,288	Your worm castings could be too hot...
	Quote 1 members found this post helpful.

01-08-2018, 04:26 PM	#6
slownickel IC Mag Supporter Join Date: Oct 2008 Posts: 2,149	Promix is all over the place. Add gypsum real quick. In 5 gallons, you can easily add 100 grams of gypsum. There is no phosphorus in your program. Some soluble P would help, bone meal would help a lot. If it is taking forever to dryout, your mix is way too heavy. __________________ OH IF A MAN TRIED TO TAKE HIS TIME ON EARTH AND PROVE WHAT A MAN IS WORTH I WONDER WHAT WOULD HAPPEN TO THIS WORLD -Harry Forster Chapins' Tombstone
	Quote

01-08-2018, 03:33 PM	#5
Pro Headies Member Join Date: Nov 2013 Posts: 545	Check your promix ppm. There has been some batches from around july with abnormally high ppm straight out of the bag. Im not sure what is in it to cause the high ppm, ive seen 1400ppm when it use to be around 400 for last 10 years or so. This was promix hp.
	Quote

01-09-2018, 12:23 AM	#10
Douglas.Curtis Senior Member Join Date: Jul 2016 Location: Back in Colorado! Yaay! Posts: 2,260	Use epsom salt for mag problems. It only has additional sulfur (magnesium sulfate) which is also used by cannabis for terpene production. Good stuff. Most 'burn' I've experienced (and I pretty much only use low nutrient strengths) happens because of pH problems.
	Quote