is this a cal, mag, zinc or some other deficiency

[piper]

You can also do a slurry test

Take a shot glass of soil, deeper the better without disturbing the roots, dump that in a beer cup and add a shot of water, stir take your readings

NOT

the most accurate, but, will give you a general idea

 

[Ca++]

With a ec 0.2/ ppm 500 (tds) your water is very hard and shouldn't be used. Your meter has already helped to tell your water is too hard to use.

Friend now is the time to explore all the different liquid readings with every liquid you use. If you test everything all the time you will learn what's what. I prefer using ppm instead of EC because it is much easier. Test the runoff and all the different waters with different feeds and you will learn what the plants like. Your smart. Good luck.

0.2 isn't 500ppm
0.2 is about 100-150ppm. Depending on the salts you are measuring.


0.2 is soft-moderate. Any lower and you need feeds aimed at low EC. As an example, Canna expect 0.2 - 0.4 from the tap. Any less, is when they will sell you their calmag agent to get it up in range.

I don't think the tap water sounds bad. Though all we can do is measure it's conductivity. Only a lab can tell us just what salts are giving us that reading. Thankfully, most water companies publish this data. Sometimes in great detail.

No pH meter is a problem. I have not checked the EC even once at this location, yet I mix a bucket every day. I would be screwed without my pH meter though.

 

[Ca++]

hey .. thanks for all your help so far- i ordered and received today the blue 'truncheon' that measures ec/ppm - the ph meter has not arrived
i tested my plain water n it registers... ec 0.2/ ppm 500 (tds) , ppm 700 (ec x 700)

i made up a mixture of the foxfarm nutes and the reading was
ec - between 3.0/3.2- so between a ppm 500 (tds) of 1500/1600 , ppm 700 (ec x 700) of 2100/2240...

as u can see i have no clue, not an idea what these numbers mean... as the drowning man yells...

H E L P....

1st LED ?

500/700 is about the 5th LED. EC 1.0

That first LED needs to be flashing at the same rate as a made up solution that measures higher. If the 1st LED is flashing at half speed, or missing the occasional flash, then it's below ec 0.2


It is worth having a calibration solution, just to check the meters accuracy. You can make one with table salt. Or make up a feed by the bottle instructions, and see the meter gives a reading that seems appropriate.
I have used those meters forever, and have about 3 to hand. I have seen enough deviation to be not bothering until I can mix up some salt. Which I have forgotten how to do right now

 

[Creeperpark]

Thank you for clearing that up Ca++, you are very helpful. I just use #7 only to calibrate my pH pocket pen. I stick the meter in the #7 and if it reads true I don't hit the cal button. IF the reading is off I calibrate meter in 7 only.

 

[Creeperpark]

0.2 isn't 500ppm
0.2 is about 100-150ppm. Depending on the salts you are measuring.


0.2 is soft-moderate. Any lower and you need feeds aimed at low EC. As an example, Canna expect 0.2 - 0.4 from the tap. Any less, is when they will sell you their calmag agent to get it up in range.

I don't think the tap water sounds bad. Though all we can do is measure it's conductivity. Only a lab can tell us just what salts are giving us that reading. Thankfully, most water companies publish this data. Sometimes in great detail.

No pH meter is a problem. I have not checked the EC even once at this location, yet I mix a bucket every day. I would be screwed without my pH meter though.

Sorry I didn't see the .2 I just saw 2., I don't know about EC I mostly use TDS in ppm. When I see ppm at 500 on my meter I say that's way high.

 

[zachrockbadenof]

hey.... thanks to all you guys for the advice.... my ph probe will be here on friday- in the meantime , i will water today with plain water, and check out the run-off and report back...

 

[zachrockbadenof]

ok , i just watered the plant with plain water , about 1/2 gallon, and tested the runoff - it was flashing on the wand ppm700 between the 140 and the 280 mark- which is way lower then the nute mixture ... opinions????

i guess its hard to give def guidance till i get the ph meter later this week...

 

[TanzanianMagic]

ok , i just watered the plant with plain water , about 1/2 gallon, and tested the runoff - it was flashing on the wand ppm700 between the 140 and the 280 mark- which is way lower then the nute mixture ... opinions????

i guess its hard to give def guidance till i get the ph meter later this week...

The idea is to water very slowly and only test the very first runoff.

 

[zachrockbadenof]

The idea is to water very slowly and only test the very first runoff.

holy shit.... i'm growing 6 diff types of plants, n the runoff was all over the scale, from a low of 200, to 1860- holy shit... the plants showing the problems tho were in the 300-400 range... i wish the ph meter would come sooner...

 

[Three Berries]

I've seen runoff at over 5kppm. But it is the first or seldom done run off. If you are getting 200 ppm out then there isn't much there to start with. Consider it a hydro grow?

 

[linde]

More than likely your pH is off and locking out nutrients. First thing I would do is flush the hell out of them.. and flush them again. 90%+ of the time when Ive got yellowing and unhealthy plants it's caused from low pH.

 

[jackspratt61]

holy shit.... i'm growing 6 diff types of plants, n the runoff was all over the scale, from a low of 200, to 1860- holy shit... the plants showing the problems tho were in the 300-400 range... i wish the ph meter would come sooner...

Hungry. N,K, Ca feed. Omit mg and p for couple feeds. Equal ppms k and ca.

 

[linde]

I wouldn't until u know where the pH is. U have lockout not deficiency.

 

[TanzanianMagic]

i'm growing 6 diff types of plants, n the runoff was all over the scale, from a low of 200, to 1860

1860 PPM on a 700 scale would be 2.6 EC.

That is likely also diluted, and considering your nutrient solution was 3.2 EC, the real EC is likely be between 2.6 and 3.2, if not higher.

 

[jackspratt61]

I wouldn't until u know where the pH is. U have lockout not deficiency.

You can't lock out nitrogen. And if your adding N you need Calcium. At this stage they'll begin calling for more k too. If he can look at his roots it would tell us a bit more now.

 

[Hillbilly69]

I've had some similar issues in the past. I agree that there seems to be a Ca defficiency probably caused by lock out. Are you using tap water from a well? If so do you know what's in it for minerals? High total alkalinity in the form of Calcium Carbonate can cause some issue. Even though the PH of your nutrient mix may seem good, over time the carbonates in the water build up in the soil and bring up lockout issues.
Getting your PH probe and figuring out where your PH is at will help you solve the issue also. If your driving the soil PH too low that could be causing some Ca lockout also. Until you can test for PH I'd hold off on adding any more nuts.
One thing I've learnt is that when using soil, adding a little powdered dolomitic lime (1 tsp / gal) helps with PH stabalization and is a good source of Ca and Mg.

 

[Three Berries]

You can't lock out nitrogen. And if your adding N you need Calcium. At this stage they'll begin calling for more k too. If he can look at his roots it would tell us a bit more now.

I'm really having to add the K after the stretch along with CAN for the calcium.

Nitrogen is pretty easy to figure out. You want a light to medium green all over. Loose it below and not enough, dark blue/green on top and too much.

 

[Dirtynugs]

You have calcium toxicity, causing a visible deficit in magnesium and potassium. Phos-bor not far behind. Ignore all the trolls saboteurs and dipshits who have replied to your post. I doubt any of them have ever grown Cannabis. If they have, that's even more damning as these are very obvious observations to anyone with a year of experience. Most of these clowns, if they even grow, use premixed nutes designed for non cannabis crops, and for some fucking unearthly reason believe that qualifies them to diagnose cannabis nutrient imbalances. Cannabis is not lettuce, not tomato, not potato, not Arabidopsis. Cannabis is Cannabis. Even the folks who cannot grasp this can provide better information than what you'll find on cannabis grow forums:

Cannabis grow forums are a disgusting display of human laziness and group think. Its a god damned shame this plant is supposed to be medicine for sick people yet none of these fuck faces put a single braincell of thought into what they are doing or saying. Theyre all wannabe drug dealers around here. Hustle science, the downgraded replacement for the already disgusting standard known as bro science. Fuck them all. They are wasting your time, wasting your resources, ruining your crops, and killing your patients with the unimaginable amount of sheepish regurgitated bullshit they spew here. Fuck all these people who just have to have to speak up for no other reason than their own delusional feelings of self importance. None of these people are important to humanity. They are all leeches and regurgitating blind idiot sheep. They are a cancerous growth on humanities bleached, shaved transsexual rape-victimized asshole. pH? EC? PPM? Any other fucking acronym? 99.9% of the shit people worry about on grow forums is completely pointless. The only thing that matters is nutrient ratios, and these dumb fucks have been promoting calcium for no other reason than sabotage and group think that blindly ruins their own grows because people who smoke Cannabis indica very obviously CANNOT think for themselves.. Cannabis makes people fucking stupid from what i can tell, as a caregiver to cancer patients who sees 99.999999% of cannabis info originate from low iq cocksuckers who just need a headchange because they cant stand the concept of natural thought.

 

[Peacefrog]

My first thought looking at your pics was LED burn. Is this a new light? Have you tried dimming the light or raising it? I usually see that striping in early veg when I get too aggressive with the intensity before the plant has developed enough root mass to keep up with the light.

 

[zachrockbadenof]

hey guys.. 1st off... not giving the plants any nutes till i get the ph meter- i hope on friday

my water is from the municipality..town water

the light is a mars fce8000 in a 5x5ft tents - i am told it is overkill, but i run it at 70pct ....