Brown spots on leaves cant figure whats happening

[MrGreenfinga]

So i got this girl soon 7 weeks old from bean

Shes showing brownspots and interveinal yellowing

my watering is fine i water and she drys out between 3-4 days in her 5 Liter airpot

i water with an EC of 900
I use RO Water and 200 worth of that EC is Calmag

So i was just wondering if this was caused by potassium

Shes really Lime green too
But i have been watering her 6,4-6,5PH

The npk of my veg nutes are 3-1-3
Really need someones opinion on this

Just forgot to mention i run 50% humidity and 20-25 C in my tent

 

[MrGreenfinga]

 

[Gmix]

Ro water = crap unwell plants 90% of the time

I don’t do par/ec as am organic ( might help to figure them come new year so I can be more helpful )

So I dunno what 200 means.

I was wondering if you’ve been adding loads of cali mg locking the nutes out till you loaded the pic now I’m more inclined to see what others say

Are you adding back The minerals your missing from the ro water
It doesn’t look like it
Ro water is void of minerals and despite what some bloggers who don’t grow say it’s crap
Honestly city water would probably be better

 

[MrGreenfinga]

Ro water = crap unwell plants 90% of the time

I don’t do par/ec as am organic ( might help to figure them come new year so I can be more helpful )

So I dunno what 200 means.

I was wondering if you’ve been adding loads of cali mg locking the nutes out till you loaded the pic now I’m more inclined to see what others say

Are you adding back The minerals your missing from the ro water
It doesn’t look like it
Ro water is void of minerals and despite what some bloggers who don’t grow say it’s crap
Honestly city water would probably be better

The 200Ec or 100ppm of calmag is indeed the minerals the plants should need so i think there might be another explanation to this

I have several plants doing exceptionally with that same amount of calmag

I use ro water because my tap water is very hard it takes up all the room for additional nutes

 

[Pilted]

5 liter pot, 3-4 day dry time. That's a really long dry time for such a small pot. what type of media are you using in those air pots?

 

[MrGreenfinga]

5 liter pot, 3-4 day dry time. That's a really long dry time for such a small pot. what type of media are you using in those air pots?

I use lightmix 70/30 peatmoss and perlite i water a half liter at a time

 

[Pilted]

I use lightmix 70/30 peatmoss and perlite i water a half liter at a time

And you are having success with other plants with same pot size and media? Do you notice a different dry time for the plants doing good?

 

[Ryguy45]

So i got this girl soon 7 weeks old from bean

Shes showing brownspots and interveinal yellowing

my watering is fine i water and she drys out between 3-4 days in her 5 Liter airpot

i water with an EC of 900
I use RO Water and 200 worth of that EC is Calmag

So i was just wondering if this was caused by potassium

Shes really Lime green too
But i have been watering her 6,4-6,5PH

The npk of my veg nutes are 3-1-3
Really need someones opinion on this

Just forgot to mention i run 50% humidity and 20-25 C in my tent

It's likely a calcium prob from ph fluxes. It's locking out potassium too sounds like. I'd flush em and use calmag in your flush water. Use extra calmag in your schedule when feeding especially if using coco. Coco has its own rules! Hope this helps

 

[MrGreenfinga]

And you are having success with other plants with same pot size and media? Do you notice a different dry time for the plants doing good?

This is the only one that size pot and in a airpot i wonder if its due to salt buildup
Would just be wierd i just flushed it 2 weeks ago

I have a small one in a liter pot but shes drinking alot for her size because she needs a transplant

But all my plants never dry out too fast they always take a couple of days though i dont water too much cant really figure out whats going on

 

[MrGreenfinga]

It's likely a calcium prob from ph fluxes. It's locking out potassium too sounds like. I'd flush em and use calmag in your flush water. Use extra calmag in your schedule when feeding especially if using coco. Coco has its own rules! Hope this helps

Youre probably right i run lightmix though i use synthetic nutes and the ph jumps to 9-10 before regulation

 

[Pilted]

If she is drinking less then the other plants I would think this is a root issue.

I understand in the cannabis community over watering is defined by fully saturating and then letting dry out completely, but this is very confusing information, and over watering can mean you are giving to much volume of water, this plus your using peet moss which holds water very well. I think your roots are being sufficed from the long dry times in the small pot.

5 liter pot is a 1.3 gallon pot, a 3-4 day dry time is more suited for a 3 gallon pot.

If I was you I would try to reduce the volume of water you are giving her during water, this will reduce the dry time between watering.

Just a suggestion. I could be wrong but it's my best guess.

 

[Ryguy45]

Youre probably right i run lightmix though i use synthetic nutes and the ph jumps to 9-10 before regulation

Ouch! Those are crazy numbers I always check my ph before feed it only takes once for a lockout to occur and it's usually visible a few days to a week after it actually happens. I'm sure you prob know but 5.8- 6.2 on coco and 6.2- 6.8 in soil. Also remember the lower side of the spectrum during veg and gradually work toward the higher numbers for bloom. Phos and potassium are typically easier for the plant to uptake when at 6.5-6.8... nitrogen for veg uptakes better in lower numbers.

 

[Gmix]

The 200Ec or 100ppm of calmag is indeed the minerals the plants should need so i think there might be another explanation to this

I have several plants doing exceptionally with that same amount of calmag

I use ro water because my tap water is very hard it takes up all the room for additional nutes

sorry I can’t figure how you get zinc iron manganese et cetera et cetera from ro water Your missing a whole load of micronutrients

You can buy them

It might not be your main problem atm however come flower your plants will be void of them.

Be honest if your ph Is 9-10 at times. It’s going to mess with npk uptake.

You can add to much cali mg and stop the plants taking up npk at the correct ratio. Anyways witchever way I hope you get it fixed

 

[MrGreenfinga]

sorry I can’t figure how you get zinc iron manganese et cetera et cetera from ro water Your missing a whole load of micronutrients

You can buy them

It might not be your main problem atm however come flower your plants will be void of them.

Be honest if your ph Is 9-10 at times. It’s going to mess with npk uptake.

You can add to much cali mg and stop the plants taking up npk at the correct ratio. Anyways witchever way I hope you get it fixed

I dont water with a ph of 9-10
I use Citric acid to get it down to 6,5
The macro nutrients isnt a problem my veg nutes has small amounts of each

 

[MrGreenfinga]

If she is drinking less then the other plants I would think this is a root issue.

I understand in the cannabis community over watering is defined by fully saturating and then letting dry out completely, but this is very confusing information, and over watering can mean you are giving to much volume of water, this plus your using peet moss which holds water very well. I think your roots are being sufficed from the long dry times in the small pot.

5 liter pot is a 1.3 gallon pot, a 3-4 day dry time is more suited for a 3 gallon pot.

If I was you I would try to reduce the volume of water you are giving her during water, this will reduce the dry time between watering.

Just a suggestion. I could be wrong but it's my best guess.

What Medium do you recommend im pretty tired of peat too
And Coco dries to quickly i dont always have time to water everyday
Just dont know where to start

 

[Pilted]

He is in peet.moss, peet moss has a low pH 3.5-4.5 ish, so if he is using peet moss as the media it means the mix he bought has limestone to raise the PH. (Unless he is using strait peet moss, but then his plants would be dead) when peet moss with a low pH and limestone with a high pH are mixed in the media, this locks your media at a certain pH, no matter what pH water/feed you put in the soil will change this, you can dump 10 gallons of 9 pH water through it and the soil ph will still be the same.

I guess there is the possibility that the limestone has been flushed out of the media, but this would take 1000s of gallons of water to accomplish this.

All this pH talk has been a nonstarter for me because of the media he is using. Anyways maybe I am wrong but I don't think it's the pH.

 

[Pilted]

What Medium do you recommend im pretty tired of peat too
And Coco dries to quickly i dont always have time to water everyday
Just dont know where to start

I love peet.moss, just you gotta keep an eye on it staying wet to long. All I use is peet moss mixes.

 

[MrGreenfinga]

I love peet.moss, just you gotta keep an eye on it staying wet to long. All I use is peet moss mixes.

Whats the water ratio of water to pot size?
Had many overwatering issues in the past and now its just a slow dry

 

[MICHGANDER9]

Howdy hows substrate tension and ph?

 

[MrGreenfinga]

Howdy hows substrate tension and ph?

The watering ph is 6,5 soil ph is between 5,8-6,8 domt know what you mean with tension