Persistant chlorisis problem

guitarmarc · #1 (**permalink**) 12-26-2008, 04:36 PM

All of the classic signs are there; older fan leaves yellowing and curling at the tip, going crispy, finally. I have and use a ph meter, correcting the water into the soil to 6.5 to 6.8 ph every time I water. It happens to my clones and my flowering plants alike, if I nute or not.

The problem is simple: try as I might, I am missing something. Any thoughts?

gm

SmknVTEC · #2 (**permalink**) 12-26-2008, 10:01 PM

What is the run-off water pH? What when and how much do you feed it?

guitarmarc · #3 (**permalink**) 12-27-2008, 04:18 PM

Runoff water seems to be about 6.5 too. I have been using Fox Farm nutes, but cautiously, with the TDS never reading over 450. I had none of this through the first run, but now, I can’t seem to stop it from continuing. One set of leaves emerges, the oldest set turns yellow and crispy. I know it is a simple problem, but somehow, I am missing it.

Thanks for your advice!

gm

SmknVTEC · #4 (**permalink**) 12-27-2008, 04:50 PM

Do you have pics?

guitarmarc · #5 (**permalink**) 12-27-2008, 05:39 PM

I will snap a couple and send.

Thanks!

PS: I did not buy the buffer to calibrate my ph meter when I got it. And I wonder if perhaps it is giving me false readings (uncalibrated). The symptoms are just too obviously related to ph and are consistent in the nursery and the grow room. So it has to be ph. Could the lack of calibtation be the culprit? I wonder...

gm

HydroGanic · #6 (**permalink**) 12-27-2008, 07:53 PM

Quote:

Originally Posted by guitarmarc

PS: I did not buy the buffer to calibrate my ph meter when I got it.

Then you really have no idea what pH you're looking at.

Calibrate!

myles117 · #7 (**permalink**) 12-29-2008, 02:01 AM

Quote:

Originally Posted by guitarmarc

I will snap a couple and send.

Thanks!

PS: I did not buy the buffer to calibrate my ph meter when I got it. And I wonder if perhaps it is giving me false readings (uncalibrated). The symptoms are just too obviously related to ph and are consistent in the nursery and the grow room. So it has to be ph. Could the lack of calibtation be the culprit? I wonder...

gm

when did you purchase the meter? Have you kept the probe moist at all times? If its fairly new, it shouldn't need calibrating but you should have some 4.01 and 7.01 just to have something to check it with.

dynosow-er · #8 (**permalink**) 01-02-2009, 05:42 PM

Its funny that you would mention this as I was experiencing the same problem using the same fert. So I stopped and switched to a totally organic fertilizer with a good bio catylast and some humic acid and they appear to be returning to a darker color. I did a npk test on my soil and though my ph levels were good the soil was not it was to high in p and high in k. Fox Farms Blows the fertilizer kills your soil, they are not who they claim to be, there just another company guessing there way into riches any idiot can mix mineral salts together. dynosow-er

guitarmarc · #9 (**permalink**) 01-02-2009, 07:00 PM

Well, my hunch was right: the meter was away off. Meters are a new experience to me and I thought that the buffer wasn’t really necessary. It is. I was more than a point off on my meter. Now, I will triple check everything and all is well again.

I went through one grow before moving (currently) and used Fox Farms nutes- Grow Big and Tiger Bloom. I have no complaints there at all, but may try an even more organic nute program next time, just to learn. The soil building discussions appeal to me.

Thanks!

gm

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Talk Back Live Transcripts: The War on Drugs: Winnable Battle or Lost Cause?	superjoint	General Marijuana News from around the World	3	05-03-2009 03:38 AM
Discussion: When Does Smoking Become a Problem.	Bobbert	Seasoned Tokers	37	01-08-2009 07:59 AM
Manifesto by Theodore	K. Mackkonen	Spirituality And Philosophy	5	05-28-2008 03:05 AM
New grower with equipment problem.	D Rock	Grow Room Design/Setup	5	05-07-2007 10:23 PM
4 1/2 week plant under cfl, drooping problem	bkr	Sick Plants and Problems	2	12-31-2006 08:04 AM

Site links

FAQ

Important

Extra

#1 (permalink) 12-26-2008, 04:36 PM
guitarmarc Registered User Join Date: Oct 2008 Posts: 163	Persistant chlorisis problem All of the classic signs are there; older fan leaves yellowing and curling at the tip, going crispy, finally. I have and use a ph meter, correcting the water into the soil to 6.5 to 6.8 ph every time I water. It happens to my clones and my flowering plants alike, if I nute or not. The problem is simple: try as I might, I am missing something. Any thoughts? gm

#2 (permalink) 12-26-2008, 10:01 PM
SmknVTEC Moderator Extraordinaire Join Date: May 2003 Location: Tornado Alley Posts: 8,076	What is the run-off water pH? What when and how much do you feed it? __________________ "I build cars for young men that only old men can afford"- Enzo Ferrari (1898-1988) LED Thread PGAMG Thread MG vs. Generic Soil Current and Legit Seedbanks GC Forum Rules

#3 (permalink) 12-27-2008, 04:18 PM
guitarmarc Registered User Join Date: Oct 2008 Posts: 163	Re: Persistant chlorisis problem Runoff water seems to be about 6.5 too. I have been using Fox Farm nutes, but cautiously, with the TDS never reading over 450. I had none of this through the first run, but now, I can’t seem to stop it from continuing. One set of leaves emerges, the oldest set turns yellow and crispy. I know it is a simple problem, but somehow, I am missing it. Thanks for your advice! gm

#4 (permalink) 12-27-2008, 04:50 PM
SmknVTEC Moderator Extraordinaire Join Date: May 2003 Location: Tornado Alley Posts: 8,076	Re: Persistant chlorisis problem Do you have pics? __________________ "I build cars for young men that only old men can afford"- Enzo Ferrari (1898-1988) LED Thread PGAMG Thread MG vs. Generic Soil Current and Legit Seedbanks GC Forum Rules

#5 (permalink) 12-27-2008, 05:39 PM
guitarmarc Registered User Join Date: Oct 2008 Posts: 163	Re: Persistant chlorisis problem I will snap a couple and send. Thanks! PS: I did not buy the buffer to calibrate my ph meter when I got it. And I wonder if perhaps it is giving me false readings (uncalibrated). The symptoms are just too obviously related to ph and are consistent in the nursery and the grow room. So it has to be ph. Could the lack of calibtation be the culprit? I wonder... gm

#8 (permalink) 01-02-2009, 05:42 PM
dynosow-er Registered User Join Date: Nov 2008 Posts: 40	Re: Persistant chlorisis problem Its funny that you would mention this as I was experiencing the same problem using the same fert. So I stopped and switched to a totally organic fertilizer with a good bio catylast and some humic acid and they appear to be returning to a darker color. I did a npk test on my soil and though my ph levels were good the soil was not it was to high in p and high in k. Fox Farms Blows the fertilizer kills your soil, they are not who they claim to be, there just another company guessing there way into riches any idiot can mix mineral salts together. dynosow-er

#9 (permalink) 01-02-2009, 07:00 PM
guitarmarc Registered User Join Date: Oct 2008 Posts: 163	Re: Persistant chlorisis problem Well, my hunch was right: the meter was away off. Meters are a new experience to me and I thought that the buffer wasn’t really necessary. It is. I was more than a point off on my meter. Now, I will triple check everything and all is well again. I went through one grow before moving (currently) and used Fox Farms nutes- Grow Big and Tiger Bloom. I have no complaints there at all, but may try an even more organic nute program next time, just to learn. The soil building discussions appeal to me. Thanks! gm

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)