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Top leaves look like interveinal chlorosis

f-e

Well-known member
Mentor
Veteran
They're running a bit on the dry side, effecting availability. You can see in most of the pictures that the soil has contracted away from the sides of the pots. So it's drier than when they were filled. The moisture content you buy the medium at is as low as you should go. With exceptions were people have stored it badly. As moisture levels drop, so will bio activity. But the real issue is root hairs that were clinging to the pot are destroyed as the medium contracts.

I wouldn't correct anything until you are using the soil properly, and you might think about adding something to feed the microlife to aid the soils recovery.

Tea with 3 sugars? I dunno... but not that.
 

Esme

Member
They're running a bit on the dry side, effecting availability. You can see in most of the pictures that the soil has contracted away from the sides of the pots. So it's drier than when they were filled. The moisture content you buy the medium at is as low as you should go. With exceptions were people have stored it badly. As moisture levels drop, so will bio activity. But the real issue is root hairs that were clinging to the pot are destroyed as the medium retreats.

I wouldn't correct anything until you are using the soil properly, and you might think about adding something to feed the microlife to aid the soils recovery.

Tea with 3 sugars? I dunno... but not that.

Do you think that is soil or coco? To me it look's like coco soil is a darker colour.
 
N

Newguy420

No it defos bio bizz light mix not coco
The hydro shop took 8 days to deliver

But when arrived it had 48 hr sticker on it from royal mail so I had to wait
Longer to pot up. But great news I have Hydro shop open up in my town
So no more late deliveries
 
N

Newguy420

Right I made a res up last night

With Mills nutrients at EC0. 4
But I only gave a small amount

Around the stem



Can I make calmag up and give em
A good soak..



I bought shogun calmag today.
 

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TanzanianMagic

Well-known member
Veteran
Hey folks as the title says my seedlings look like they have
Interveinal chlorosis. But I am not sure.

They where started in Kanamu pacha super soil. You don't need to pH or feed it. So they were in 1lt pots for 13 days and there root growth was terrible so I potted them up into 3.5lt pots of bio bizz light mix. I put azos and Mykos in the hole and watered them with biosys. They are under
An adjustawing 400watt m/h with
Heat shield. Temps 25c 65% humidty
I need help on how to save and bring them back. I should have not started
Them in this supersoil. Any help would be appreciated thanks the new guy.
A couple of ideas:

1. The plants look like they need magnesium.

This could be from a lack of magnesium in liquid form, or from compaction of the soil/roots, or cold roots.

The light mix literally has close to zero nutrients in it. You should always add a couple of tablespoons of magnesium lime, and let it sit in water for days to it can hydrate properly.

Also if you use perlite and want to use the mix again or avoid compaction, you should always put perlite in a tub with warm water for at least 10 minutes, scoop up whatever floats, and throw away the water, which will have the consistency of wallpaper glue because of all the perlite dust. This will eventually turn your soil into cement.

2. If you use a combination of light mix and supersoil, it is best to put the supersoil on the bottom, and a layer of light mix on top.

3. I like to use a mix of 1/3 each of light mix, worm castings and perlite.

That's my base mix, to which I add supersoil components of (rock phosphate (P, Ca, trace elements), vinasse (K, sugars), alfalfa pellets (N, triacontanol growth hormone, protein, carbon), lava meal (trace elements), silica clay (Si), magnesium lime (Mg, Ca), seaweed (more trace elements, plant hormones), which provides the range of NPK, Ca-Mg-Si-S and trace elements.

4. Plants need nutrients in solid and liquid form.

The solid form is slow release but long term, the liquid form is fast release and short term. You need both to make nutrient deficiencies go away and stay away.

Because you're already using solid nutrients, liquid nutrients should be very light in concentration. I use a standard 0.4 EC of a high P/K flowering food to encourge root growth after transplanting, or after topping up with 2 inches or more soil at the start of flowering. Epsom salt should be effective at 0.1 EC.

5. If you're using organics like supersoil, you're basically feeding the microbes too.

Microbes also need liquid and solid nutrients. A little addition of soft/cooked rice or grains, no more than you'd think of plant seeds being present in outdoor soil, help more microbes make more nutrients available to the plant.

Kanamu Pacha Hortisol
https://www.kanamu-pacha.com/home-deutsch/unser-hortisol/

Sounds great. They also added charcoal I'm sure as it is based on Terra Preta.
6. Cannabis is a plant of the alluvial zone.

That means that most of the year it gets watered by evaporation from a relatively shallow watertable (about 1/2 foot to 2 feet).
 
Last edited:
N

Newguy420

My water is soft blue lab truncheon starts at ec0. 2 and both my blue labs don't get a reading
 
N

Newguy420

I was going to add calmag to the feed I made up last night and adjust ph
 

Esme

Member
My water is soft blue lab truncheon starts at ec0. 2 and both my blue labs don't get a reading

Run Calmag to 0.3ec and that should sort your problem not really sure on how I would go about adding feed as this mix has nute's in there maybe just add a little bit of nutes and go from there. Coco and rockwool are my thing but I would defo run Calmag you've caught it early to mate so shouldn't really be a problem.
 

Esme

Member
What i would do to have water like that coming out of the tap ha ha my water starts at 0.75ec so I don't really run calmag if i do it's not much
 

Esme

Member
PH 6.5 I do believe is best for soil but don't quote me on that one mate as again not my way of growing
 
N

Newguy420

Thanks Esme I have done what you said. Fed them calmag Ec0. 3 I hope it helps them out
 

GoatCheese

Active member
Veteran
Got some daylight pics it's hard to spot under daylight in house or under the sun. But I think you can see from
Pic one what's up & all seedlings have
Any help on how to fix this is appreciated
The soil looks abit dry ..i think you're under watering them abit as i've said.. Just water them a bit more. Don't feed them anything extra at this point. Cannabis lives just fine in fresh potting soil and shouldn't need anything special.
CalMag / epsom belong to coco grows, not soil so much. if you use good bottle nutrients. CalMag is for coco, imo



If you start seeds in 3 liters of fresh, good soil, there should be plenty of nutrients for them for the first couple of weeks atleast, so all you have to give them is water. ..that is how it works for me at home with just common market potting soil, so i imagine it should work the same for you at your end.
 

GoatCheese

Active member
Veteran
Thanks got cheese. I will get it right

Next grow...
No need to get it right next time! ..your plants look just fine, just water them a bit more.

Cannabis doesn't grow in perfect conditions all the time in nature either, so no need to worry too much if some leaves got abit of damage because they have dried out abit.

You will harvest nice buds if this is gonna be the worst that your plants will look! ..my plants have looked way shittier than those and i got smokes.

Just keep to the basics and it will be fine. Visit the soil grow-forum, read the grow guides (i'm sure there are some of those to be found) and ask around ..there are better growers than me there to help you, i'm sure .
..all you need is abit more water, atm, and i'm sure your plants will look as good as new in a week.
No need to worry. It will be fine:)
 

f-e

Well-known member
Mentor
Veteran
It shouldn't really need food yet, but I have started early myself with light mix. Finished the bag, and never again..

With literally no EC being measured, I would want a bit of something adding. Letting it go so dry, means that low EC water reached the roots. Which can cause wilting, that I believe is osmotic shock. It's all history now though, and they don't look bad.

I would go with the mild feed, as you have done. I wouldn't mess about though, I would just let them have it. Maybe just EC 0.2 but all over. They will need that food, long before it can build to toxic levels I reckon. IIRC mine were soon getting about 0.8 which rose to hydro levels in time.

Many feeds presume some EC from the tap, and use it. So hardening up the water a bit is actually needed. In which case, taking it to ec0.2 with calmag then to 0.4 with feed might be better. Feeds don't tend to tell you this, but there origin can do.

Edit: As the cogs turn, I realise that low ec tap will of taken Mg off the anions quite readily. So any run-off won't of helped condition your soil. Still... They look ok and you will pot up again soon.
 
N

Newguy420

Be good to see these plants with buds.



I plan on using canna seed mix Ec0. 4
Then canna terra or plagron bat mix

I bought Mills nutrients for this grow

But was looking at canna bio range
& bio soil I appreciate the help Lads
 

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