Is this nitrogen def or cal mag?

NebulousPLM

NebulousPLM

Well-Known Member
Title says it all... I can't figure it out.
This is my first grow, so we're just getting things going. The plants are actually looking really good for the most part, but I have two problem children that I'm dealing with.

The first, which is the focus of the thread is what does this look like to you?
At first, I was thinking nitrogen... But every picture I see of nitro-def doesn't quite look like this... But then I look at the most common, which seems to be Cal-Mag, and I see similarities in this also. Just wanted to see if you guys had any insight?



Sorry lights on for this one.



Diet:
Sensi Grow A
Sensi Grow B
Voodoo Juice
B52
Big Bud

* Been feeding them everyday, but read that may no be the best idea. So cutting back to a 2:1 Feed to Water ratio.
** Plant two:
Definite nitrogen tox right? Should be as easy as a flush?

 
Alienwidow

Alienwidow

Well-Known Member
Well it doesnt look like cal or mag def. mag def is yellowing all over the leaves kinda like between the veins. And cal def is little dots forming on the leaves. So id say no to that. And the leaves are dark green so id rule out nitrogen def. if anything id guess a little burn cause of the burnt tips ;)
 
NebulousPLM

NebulousPLM

Well-Known Member
Alienwidow said:
Well it doesnt look like cal or mag def. mag def is yellowing all over the leaves kinda like between the veins. And cal def is little dots forming on the leaves. So id say no to that. And the leaves are dark green so id rule out nitrogen def. if anything id guess a little burn cause of the burnt tips ;)
Click to expand...
You think so?
This one's the only one with that burn... Though it was/is the tallest plant.
It's just weird because there's almost a gradient on the leaves, but it's not THAT light.
Hmm... Maybe we'll move the light up some..

I appreciate your help!
 
NebulousPLM

NebulousPLM

Well-Known Member
Again, these are two separate plants...
There's the plant on the top.

Then I threw the Nitro Tox plant in there just to make sure I was on the right track.

The one I'm mainly worried about is the top one
 
polishpollack

polishpollack

Well-Known Member
when you write 2:1 feed to water, do you mean feed twice, then plain water, then feed twice, then plain water? you're ferting too much and you're also using quite a few different kinds of fert. you're not doing a plant any favors if you give too much of anything in one dose, or give too much over time like a feed, feed, water schedule. you have dark green leaves and dying leaf tips which indicate over fert. so stop the ferts for a while, probably until lower leaves start to yellow, the resume ferting, but do so rather modestly. over ferting is probably the most common mistake growers make and I suspect this happens because people can add fert easily and not really know what they're doing. I know the containers look cool in the store but not all cool things are good for you.
 
NebulousPLM

NebulousPLM

Well-Known Member
polishpollack said:
when you write 2:1 feed to water, do you mean feed twice, then plain water, then feed twice, then plain water? you're ferting too much and you're also using quite a few different kinds of fert. you're not doing a plant any favors if you give too much of anything in one dose, or give too much over time like a feed, feed, water schedule. you have dark green leaves and dying leaf tips which indicate over fert. so stop the ferts for a while, probably until lower leaves start to yellow, the resume ferting, but do so rather modestly. over ferting is probably the most common mistake growers make and I suspect this happens because people can add fert easily and not really know what they're doing. I know the containers look cool in the store but not all cool things are good for you.
Click to expand...

So a feeding schedule like this is even too much?

M - Feed
T
W - Feed
TH -
F - Water
S -
SUN - Feed
M -
T - Feed
W -
TH - Water
F -
S - Feed
SUN -

How often would you feed them, compared to straight water?

I just flushed the nitro tox one yesterday, but haven't touched the over fert one... it's a little too big for me to move by myself. Are you saying a flush isn't necessary for that one?
 
Alienwidow

Alienwidow

Well-Known Member
NebulousPLM said:
So a feeding schedule like this is even too much?

M - Feed
T
W - Feed
TH -
F - Water
S -
SUN - Feed
M -
T - Feed
W -
TH - Water
F -
S - Feed
SUN -

How often would you feed them, compared to straight water?

I just flushed the nitro tox one yesterday, but haven't touched the over fert one... it's a little too big for me to move by myself. Are you saying a flush isn't necessary for that one?
Click to expand...
Ok never mind all the fwfwfw or wwfwwfwwf. First thing to figure out is what medium your growing in. In soiless like coco or promix which contains no organic food and no real dirt you need to feed every watering. In organic potting soil like foxfarm or happy frog you dont need to feed every watering, and you dont need to feed as much because the soil bears some of the burden of feeding your plant.

Ok so finding that out is going to help but if theyre big plants and youve been feeding a lot, never mind, lets just figure out the soil or soiless problem first.
 
NebulousPLM

NebulousPLM

Well-Known Member
Alienwidow said:
Ok never mind all the fwfwfw or wwfwwfwwf. First thing to figure out is what medium your growing in. In soiless like coco or promix which contains no organic food and no real dirt you need to feed every watering. In organic potting soil like foxfarm or happy frog you dont need to feed every watering, and you dont need to feed as much because the soil bears some of the burden of feeding your plant.

Ok so finding that out is going to help but if theyre big plants and youve been feeding a lot, never mind, lets just figure out the soil or soiless problem first.
Click to expand...
They're pretty big, except the one with Nitro Tox. I would say maybe 3 ft in 3 gallon buckets? This is week 4 of bloom, going into 5 and didn't have problems til now.

I'm growing in promix HP, so soilless.
I didn't read up on maybe mixing a few things until I had these problems.

But another problem is that even though we were supplied with "cheese quake clones" I'm almost sure he mixed some up.
 
NebulousPLM

NebulousPLM

Well-Known Member
This is what I've been following , plus bud candy. Every feed is 3-4 gallons.

10 ML/gal A+B
6 ML/gal additives.

Edit: been feeding every water since veg. just started the 2:1 this week.
 

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Alienwidow

Alienwidow

Well-Known Member
NebulousPLM said:
They're pretty big, except the one with Nitro Tox. I would say maybe 3 ft in 3 gallon buckets? This is week 4 of bloom, going into 5 and didn't have problems til now.

I'm growing in promix HP, so soilless.
I didn't read up on maybe mixing a few things until I had these problems.

But another problem is that even though we were supplied with "cheese quake clones" I'm almost sure he mixed some up.
Click to expand...
Im running five strains and i feed them all the same. They do fine it seems. Ok, i run soiless too. Promix hp too. Woohoo, twinsies............ Sorry about that.
Anyway, you SHOULD feed soiless plants every watering. So thats not the problem. The problem is one of two things. One is that your simply feeding too much. Like 1000 ppm, too much.
The second thing it could be is reabsorbtion of the fertilizer into the meduim causing salt buildup. What i mean by this is that if you have a drip catcher under the plant, and you feed until runoff and hope to be leaching some of the fertilizer out of the medium, sometimes you arent. If the plant is sitting in the tray reabsorbing the runoff water, then its also reabsorbing the fertilizer as well. Causing build up. This can be remedied by elevating the plant off the drip catcher with bricks, or some rocks, or anything that wont rot or mold. That way the water evaporates and the nutrients are left on the drip tray.
A good way to test whats going on in the root zone is to measure the ppms of your runoff. Id guess your at 1600 or higher. And if you arent working with a ppm meter....just face palm yourself :lol:
Either way, a flush should remedy the problem and just feedimg at a lower rate, or getting that plant out of the runoff.
 
NebulousPLM

NebulousPLM

Well-Known Member
Alienwidow said:
Im running five strains and i feed them all the same. They do fine it seems. Ok, i run soiless too. Promix hp too. Woohoo, twinsies............ Sorry about that.
Anyway, you SHOULD feed soiless plants every watering. So thats not the problem. The problem is one of two things. One is that your simply feeding too much. Like 1000 ppm, too much.
The second thing it could be is reabsorbtion of the fertilizer into the meduim causing salt buildup. What i mean by this is that if you have a drip catcher under the plant, and you feed until runoff and hope to be leaching some of the fertilizer out of the medium, sometimes you arent. If the plant is sitting in the tray reabsorbing the runoff water, then its also reabsorbing the fertilizer as well. Causing build up. This can be remedied by elevating the plant off the drip catcher with bricks, or some rocks, or anything that wont rot or mold. That way the water evaporates and the nutrients are left on the drip tray.
A good way to test whats going on in the root zone is to measure the ppms of your runoff. Id guess your at 1600 or higher. And if you arent working with a ppm meter....just face palm yourself :lol:
Either way, a flush should remedy the problem and just feedimg at a lower rate, or getting that plant out of the runoff.
Click to expand...
Face palming for two reasons.
1. Not testing PPM - actually if you have time can you explain what PPM really is...
2. My plants are running off onto the concrete floor and sitting in their runoff. Which pretty much solidifies what you said- in essence, I need to elevate my plants.

Edit: No need to explain. Google search does wonders :-)

Other than that, good to know I'm not the only one using straight ProMix HP! My friend swears that's what was burning the plants... -_-
 
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K

Kili Frunza

Active Member
NebulousPLM said:
So a feeding schedule like this is even too much?

M - Feed
T
W - Feed
TH -
F - Water
S -
SUN - Feed
M -
T - Feed
W -
TH - Water
F -
S - Feed
SUN -

How often would you feed them, compared to straight water?

I just flushed the nitro tox one yesterday, but haven't touched the over fert one... it's a little too big for me to move by myself. Are you saying a flush isn't necessary for that one?
Click to expand...
That looks like A LOT of waterings in one week..... What size pots do you have, small pots require watering more often but larger pot do not, do you test the soil before you water to see if it is really needed?.....
 
NebulousPLM

NebulousPLM

Well-Known Member
Kili Frunza said:
That looks like A LOT of waterings in one week..... What size pots do you have, small pots require watering more often but larger pot do not, do you test the soil before you water to see if it is really needed?.....
Click to expand...
It looks like I'm learning the importance of PPM as we speak... They're 3 Gallon.
 
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