Too much or too little nutrition?

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Beachwalker

Well-Known Member
Blitz35 said:
I was actually thinking the opposite. He mentioned soil ph 'is around 7'...he waters with water 'around 6.5 ph'. Doesn't sound like he's fed alot. If it is ph related, i would say it may be a bit high, as in these peat moss blends, ph of around 6.1-6.3 is what i found works best. When i was going higher at around 6.5-6.7 at the start, i would always run into issues with micros...though the yellowing didn't look like op's. My original guess was heat related, but hard to see in the pics, and op has ignored that part of the question in my last reply..temps/humidity, distance to light? It's a guessing game without more input.
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Yes I just read his soil is around 7, thanks for pointing that out. Op I add one tablespoon of lime per 3 gallons of soil, if I need to adjust I add more but a little at a time, in ffof 1 tbsp usually holds me around 6.2 - 6.5. If my soil was 7 I might water the next couple of times with my pH around 6.2, good luck

Edit: not sure if spraying alcohol on your plants could have caused any of that issue?
 
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Gregorius Green

Gregorius Green

Member
Beachwalker said:
Yes I just read his soil is around 7, thanks for pointing that out. Op I add one tablespoon of lime per 3 gallons of soil, if I need to adjust I add more but a little at a time, in ffof 1 tbsp usually holds me around 6.2 - 6.5. If my soil was 7 I might water the next couple of times with my pH around 6.2, good luck

Edit: not sure if spraying alcohol on your plants could have caused any of that issue?
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When you say lime, that means something like the mineral dolomite lime?

It was just 1 tbsp alcohol diltued with a few cups water and soap.

Can you tell the soil pH by flushing the pot? I previously flushed one of the plants with a couple of gallons of water and the runoff water had pH 6.8ish at the end of the flush. I have not learned any method to measure soil pH.
 
Aussieaceae

Aussieaceae

Well-Known Member
Gregorius Green said:
Drainage is fine. I use fabric pots and there's some perlite in the soil also.
I water two times per week usually.

I have Plant magics Old timer organic PK 2-4-8. I fed 2 ml last time to each plant.
Temperature in grow tent is 28° C, and I have a circulating fan blow just above the plants.
It's 400 W HPS in there in a cooltube. Distance to plants approx 50 cm
Air humidity is low, 25%.

If pH is close to 7 in soil, is that too high? I thought thats what dolomite lime does in the soil, buffer to pH 7.
I know for sure that the soil is not acidic.
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If it's not a drainage issue, i'm not sure what it is then.

Ph7 should be pretty ok if it's decent soil.

Sorry i can't help you.

Good luck, i'm a little stumped.

:peace:
 
Gregorius Green

Gregorius Green

Member
Here's how it looks now:
overview.jpg
closer view:
closer.jpg



And here below is a Blue cheese plant standing next to it:
blue.jpg

Yesterday wathcing the sunset I smoked some Amnesia CBD from my first grow and it hit me pretty hard I must say even though it's not that high in THC. Still feeling the high today slightly.
It hurts my ego a bit that the plants don't look healthy but at the same time I'm very grateful for any buds I can get. This is just my second grow so there's a lot to learn!

I watered this morning with just plain water pH 6.2. Looking to harvest at the end of the month, yay!
 
T

TheHarvester

Active Member
Heat and humidity in relation to your soil/water salt level.

The plants are transpiring faster then they can take up the water because of your heat/humidity and the abundance of salts in the soil.

Lower the heat, raise the humidity. and give them a good flush.
 
Gregorius Green

Gregorius Green

Member
TheHarvester said:
Heat and humidity in relation to your soil/water salt level.

The plants are transpiring faster then they can take up the water because of your heat/humidity and the abundance of salts in the soil.

Lower the heat, raise the humidity. and give them a good flush.
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Ok thanks, interesting theory.
Yeah humidity is low now during winter, usually below 30%.
Is it enough to spray the plants with water? Or is it better to use a humidifier?
 
3rd Monkey

3rd Monkey

Well-Known Member
Get that ph straightened out when you flush and check your runoff. 6.0 at least and maybe a LIGHT foliar feed with some Epsom salts, not looking to add bud rot to your list. If your runoff comes out higher than 6.5, that's a pretty good tell.

My guess is your soil is buffering slightly high for mg pickup and you have a salt buildup because of that ph, which is locking out other things as well.

Flushing them won't hurt anything as long as you let them dry out between flushes. There's plenty of nutrition in the plants to starve off for a while.

Brings me to my next point, how heavy are those pots when you water and are they bottoms off the floor?
 
Gregorius Green

Gregorius Green

Member
3rd Monkey said:
Get that ph straightened out when you flush and check your runoff. 6.0 at least and maybe a LIGHT foliar feed with some Epsom salts, not looking to add bud rot to your list. If your runoff comes out higher than 6.5, that's a pretty good tell.

My guess is your soil is buffering slightly high for mg pickup and you have a salt buildup because of that ph, which is locking out other things as well.

Flushing them won't hurt anything as long as you let them dry out between flushes. There's plenty of nutrition in the plants to starve off for a while.

Brings me to my next point, how heavy are those pots when you water and are they bottoms off the floor?
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Thanks, for the advice!
They are 4 gallon fabric pots with plastic trays underneath. Yeah, I think also there's something with the soil pH messing things up.
 
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