Anyone know what this is? Help please

[leafy86]

Can anyone identify this deficiency please.
I'm growing in normal shop brought multipurpose compost(same as i always use). Problem started from seed. Only affecting lower leaves and is spreading up as the plants grow. Been told its mag deficiency. Gave them 3 liters of pH 6.2 yesterday with 2ml calmag and 1.5 foliage. I know if it is mag deficiency it won't clear overnight but want some help to stop it before it gets worse. Pics attached.

 

[Old Salt]

Looks like a cal/mag deficiency to me.

 

[leafy86]

Looks like a cal/mag deficiency to me.

Do you know if the calmag will reverse it or just stop it spreading?

 

[Chris Scorpio]

No leaf will ever get better

So always watch new growth , and usually takes a week ish to really see results

 

[Virgin Ground]

What are your lights on/off temps along with rh? You said this problem started from seed?
What lights are you running??
Leaves look like they have edema
(holding water) and are curled downward.
Overwatering( anaerobic conditions at the root zone), strong lighting and cold temps can all bring about mag issues. Try to figure out what is causing it. If it's just lights the cal-mag will fix her up. If it's from overwatering or something environmental you will want to address that issue otherwise you are just throwing cal-mag at her and too much of that can cause other problems. Too much cal can lockout k.

 

[leafy86]

What are your lights on/off temps along with rh? You said this problem started from seed?
What lights are you running??
Leaves look like they have edema
(holding water) and are curled downward.
Overwatering( anaerobic conditions at the root zone), strong lighting and cold temps can all bring about mag issues. Try to figure out what is causing it. If it's just lights the cal-mag will fix her up. If it's from overwatering or something environmental you will want to address that issue otherwise you are just throwing cal-mag at her and too much of that can cause other problems. Too much cal can lockout k.

My light is a Mars Hydro TS 3000 in a 4x4 tent at 20inch.
Tems are 25 light on 21 light off humidity is 50ish, about 46 when they need watering.and they in 15ltr fabric pots. My first time using them.

 

[Virgin Ground]

What are your watering habits like? How do you determine when to feed?
Your temps look ok. Rh could be a tad higher.
I don't know enough about the light. If you are using the mfgr. hanging instructions you should be good.

 

[Old Salt]

The light should be fine at 20"

 

[leafy86]

What are your watering habits like? How do you determine when to feed?
Your temps look ok. Rh could be a tad higher.
I don't know enough about the light. If you are using the mfgr. hanging instructions you should be good.

Yes using manufacture instructions and watering is underwatered if anything.

 

[leafy86]

Was LSTing her earlier and the leaves are rather twisted aswell and feel like paper?

 

[Virgin Ground]

I can ask again...
How do you determine when to water??

 

[BeanTownFan420]

Can anyone identify this deficiency please.
I'm growing in normal shop brought multipurpose compost(same as i always use). Problem started from seed. Only affecting lower leaves and is spreading up as the plants grow. Been told its mag deficiency. Gave them 3 liters of pH 6.2 yesterday with 2ml calmag and 1.5 foliage. I know if it is mag deficiency it won't clear overnight but want some help to stop it before it gets worse. Pics attached.

I suggest using Happy frog from Fox Farm i have been for over ten years now and i never suffer from any issues period all my plants stay green and healthy seed to harvest and i do not add anything other than top dress and tiger bloom and big bloom.

 

[BeanTownFan420]

I am pretty sure your doing nothing wrong its that your soil lacks the proper ratios of nutrients needed for sustained healthy growth.

 

[leafy86]

I can ask again...
How do you determine when to water??

I feel pot weight and put finger in to feel moisture.

 

[leafy86]

I am pretty sure your doing nothing wrong its that your soil lacks the proper ratios of nutrients needed for sustained healthy growth.

I work at the UKs biggest distributor of gardening growing media. I have access to all coir, peat, etc. What would be best mix.

 

[BeanTownFan420]

I work at the UKs biggest distributor of gardening growing media. I have access to all coir, peat, etc. What would be best mix.

Happy Frog and Maine Lobster compost.

• BeanTownFan420
• Oct 21, 2019

Day 16 looking more indica then all my other crops of same strain results of selfing.

• BeanTownFan420
• Nov 15, 2019

Day 20 super healthy soil.

• BeanTownFan420
• Jan 4, 2020

Happy frog does this every time i use it my plants look perfect.

 

[Old Salt]

I work at the UKs biggest distributor of gardening growing media. I have access to all coir, peat, etc. What would be best mix.

Wow, that's a loaded question! Pretty much every grower has their own take on this. Mine is 70% coco coir / 30 % perlite in a drain-to-waste system.

 

[BeanTownFan420]

KISS=Keep It Simply Soil and that soil again is Happy Frog.

 

[Edzzed]

I work at the UKs biggest distributor of gardening growing media. I have access to all coir, peat, etc. What would be best mix.

I used Fox farms ocean forest. Last grow netted me 20 ounces with 4 legal plants. Round two is same soil. If it ain't broke don't mess with it.

 

[BeanTownFan420]

I have used it well over 40 times in ten years.Every time i got frosty nugs that were better than anyone else i knew had.