Please help me fix this problem

T

Tap4942

Member
Coco coir & perlite 70/30
800ppm feeding twice a day at lights on and 10.5 hours later.
Grow light is the Maxsisun PB4000 (was hanging at 30" but I've dropped it down to 20", I think manufacturer recommends 18".

Am I over-watering/overfeeding or is this a light problem?

Nutrients: Humboldts Secrets Base A & B, Tree Trunk, Golden Tree, Plant Enzymes, Cal-Mag & Iron
 

Attachments

  • IMG20240128215419.jpg
    IMG20240128215419.jpg
    4.7 MB · Views: 53
  • IMG20240128215416.jpg
    IMG20240128215416.jpg
    5.1 MB · Views: 55
  • IMG20240128215408.jpg
    IMG20240128215408.jpg
    4.7 MB · Views: 46
  • IMG20240128215359.jpg
    IMG20240128215359.jpg
    6.1 MB · Views: 43
  • IMG20240128215343.jpg
    IMG20240128215343.jpg
    5.4 MB · Views: 44
  • IMG20240128215338.jpg
    IMG20240128215338.jpg
    5.3 MB · Views: 40
  • IMG20240128215335.jpg
    IMG20240128215335.jpg
    6.1 MB · Views: 33
Looks like a toxicity and nutrients lock.
your over feeding, but still have purple stems and burning of leaves.
So something is not moving there.
First, make sure your in ideal temps for elements to move, heat is your friend.
Second drop your ec to a lower setting as you have small plants and no way they are in need of more than 0.8 - 1.0 ec.
Make sure you ph to around 6.2-6.3
And don't water unless the coco gets at least 30-40% dry, let the roots have a chance to build up mass before you can water more and more frequently.
 
DanKiller said:
Looks like a toxicity and nutrients lock.
your over feeding, but still have purple stems and burning of leaves.
So something is not moving there.
First, make sure your in ideal temps for elements to move, heat is your friend.
Second drop your ec to a lower setting as you have small plants and no way they are in need of more than 0.8 - 1.0 ec.
Make sure you ph to around 6.2-6.3
And don't water unless the coco gets at least 30-40% dry, let the roots have a chance to build up mass before you can water more and more frequently.
Click to expand...
My tent is 78-83 likes on and 70-72 lights off. I did have my light up too high and lowered but I won't know the correct intensity until my PAR meter gets hear.

I was doing 5.8 PH because everyone on YouTube and Google said 5.8 but you and Reddit have told me the same thing 6.2-6.3.
Will I also need to test the PH in my coco with a soil tester?

How do I know when it's 30-40%? I weighed my pots after watering but need help with the formula.
 
DanKiller said:
Looks like a toxicity and nutrients lock.
your over feeding, but still have purple stems and burning of leaves.
So something is not moving there.
First, make sure your in ideal temps for elements to move, heat is your friend.
Second drop your ec to a lower setting as you have small plants and no way they are in need of more than 0.8 - 1.0 ec.
Make sure you ph to around 6.2-6.3
And don't water unless the coco gets at least 30-40% dry, let the roots have a chance to build up mass before you can water more and more frequently.
Click to expand...
Should I flush with plain RO water? I've heard flushing with plain water from half the internet and the other half said flushing with 150ppm Cal-Mag and 150ppm nutrients for a total of 300ppm
 
Tap4942 said:
My tent is 78-83 likes on and 70-72 lights off. I did have my light up too high and lowered but I won't know the correct intensity until my PAR meter gets hear.

I was doing 5.8 PH because everyone on YouTube and Google said 5.8 but you and Reddit have told me the same thing 6.2-6.3.
Will I also need to test the PH in my coco with a soil tester?

How do I know when it's 30-40%? I weighed my pots after watering but need help with the formula.
Click to expand...

Before you go into unrelated stuff like par meters and other nonsense that won't make your grow any better let's cover the basics.
Make sure you put some probe or temp meter in canopy level for an accurate reading, not in the side of the tent, but right under the lights at canopy level.
Next, people have trouble with 5.8, it's just too low, 6.2 is what I recommend but you shouldn't listen to me or youtube, water with 5.8 and look at your plants after a 6 hours period or even a day, afterwards try 6.2-6.3 and take notes.
Why you need to test the PH of your coco ? You mean run off ? If you follow your plants it's uneccerary, if you wanna be l a math head then go for it.

You will know eventually when it's dry enough, also lifting it up is good way of checking.

Tap4942 said:
Should I flush with plain RO water? I've heard flushing with plain water from half the internet and the other half said flushing with 150ppm Cal-Mag and 150ppm nutrients for a total of 300ppm
Click to expand...

Roots don't like flactuations, it's better to "flush" with a + or - solution close to your feed in order to achieve what you want slowly and without shocking the roots.
Only if you over do it to the max and put poison in your watering then you should flush with plain RO
Anyway, don't make drastic changes to the rootzone.
 
Your bags are in saucers - how about putting them on risers so bottoms breathe / oxygenate.

Plus …. You are kind of focusing on the early leaf sets. Those get expended. You literally could clip them. All of the newer growth seem fine but maybe step back the ppm a bit. Do not follow some arbitrary feed schedule- read the plants.

IMG_4092.jpeg
 
Tap4942 said:
Should I flush with plain RO water? I've heard flushing with plain water from half the internet and the other half said flushing with 150ppm Cal-Mag and 150ppm nutrients for a total of 300ppm
Click to expand...
You don't have lock out and you don't need to let Coco dry. Do not flush anything mate. The guy handing you advice doesn't have a clue. I've been running Coco for about 5 years and I never let it dry out. This is a technique for soil not Coco. I run 5.8 pH in veg and 6 - 6.2 in flower.
 
Kola_Kreator said:
You don't have lock out and you don't need to let Coco dry. Do not flush anything mate. The guy handing you advice doesn't have a clue. I've been running Coco for about 5 years and I never let it dry out. This is a technique for soil not Coco. I run 5.8 pH in veg and 6 - 6.2 in flower.
Click to expand...

Right, I think your plants look lovely @Tap4942
Don't do nothing :)
 
Kola_Kreator said:
You don't have lock out and you don't need to let Coco dry. Do not flush anything mate. The guy handing you advice doesn't have a clue. I've been running Coco for about 5 years and I never let it dry out. This is a technique for soil not Coco. I run 5.8 pH in veg and 6 - 6.2 in flower.
Click to expand...
They what's wrong with my plants? There has to be something wrong. I've already flushed but if that's not the problem then what is?
 
Tap4942 said:
Coco coir & perlite 70/30
800ppm feeding twice a day at lights on and 10.5 hours later.
Grow light is the Maxsisun PB4000 (was hanging at 30" but I've dropped it down to 20", I think manufacturer recommends 18".

Am I over-watering/overfeeding or is this a light problem?

Nutrients: Humboldts Secrets Base A & B, Tree Trunk, Golden Tree, Plant Enzymes, Cal-Mag & Iron
Click to expand...
I'm no expert like at all but it does sound like over watering/feeding. Water till run off and empty run off I hear, then coco should be good for a couple days while nutes move around and roots get bigger looking for nutes. So instead of watering twice in one day try once in two days! But as I said im no expert at all first timer but have some sciencey idea
 
@Tap4942 are you watering to run off? And are you using a reliable pH metre? Every time you water you need to get about 20% run off, when you do this you remove the excess salts. This is critical for maintaining a healthy root zone. How big are your pots and how much volume are you feeding with at each watering?

You can drop your ppm too. 600 - 650 is about right for that size of plant
 
Pa-Donk said:
I'm no expert like at all but it does sound like over watering/feeding. Water till run off and empty run off I hear, then coco should be good for a couple days while nutes move around and roots get bigger looking for nutes. So instead of watering twice in one day try once in two days! But as I said im no expert at all first timer but have some sciencey idea
Click to expand...
Yeah that's what I used to do with less problems but I was following cocoforcannabis high frequency fertigation
 
Over watering causes a lack of oxygen in the root zone. Coco and perlite contains plenty of oxygen for the roots (providing you are using a quality source for your Coco) even when fully saturated. This is why you will hear people say that Coco can not be Overwatered. It's very unlikely that your problems are from over watering.

This saucers under the plants look like the problem to me. If you were watering to 20% run off those saucers will over flow and you'll flood the tent. If you are watering just enough to fill part of the saucer you are not watering with enough volume. Could you give me a run down on what you do when you water and where is the run off going?

You can water the Coco once every couple of days and have success. This is basically because you are allowing the plants to use all of the nutrients and you don't need anywhere near as much run off to push out the excess. There's nothing wrong with growing like this but you won't get the explosive growth rates that you get if you go the DTW route
 
Tap4942 said:
Should I flush with plain RO water? I've heard flushing with plain water from half the internet and the other half said flushing with 150ppm Cal-Mag and 150ppm nutrients for a total of 300ppm
Click to expand...
Flushing with RO tends to leach cal and mag from coco, thats why a weak nute solution should be used. I'm feeding every 2 hours.
 
You must log in or register to reply here.
Back
Top