Vermiculite Perlite and pH level

[Metrix]

Hi guys

How should the pH level be by 70% Vermiculite and 30% perlite, I read something that 5.0 or 5.2 it's that true?

This time I want too grow my mamas in vermiculite/perlite mix, but I got nutrient deficiency what I think I cause by pH.

Growing for years in coco and never have it like that, I use the same A+B since years.

EC level 0.8
pH 5.8
water temp 20c

Tanks in Advance

 

[mysticepipedon]

That's an odd color pattern for a nute deficiency, but a wild guess is that it might be related to the light being too intense.

 

[Metrix]

Well yes it's N deficiency, but very strange that this only happens in vermiculite perlite mix, lights are the same as i use before, nothing change there.

I will lower the lights power and add a bit more AB to 1.0EC,

 

[Metrix]

but still the same question, how pH should be by watering? I'm think the deficiency is cause by wrong pH level

 

[Aqua Man]

Its not N deficiency…. Its light burn

 

[Aqua Man]

Ph of your nutrients should be about 5.5-6.0

 

[Observationist]

Id think so, assuming not organic feed.

(5.5-6)

 

[Metrix]

Its not N deficiency…. Its light burn

hmm, strange but possible, I will lower the lights power,

Pics from another tent but exactly the same technical setup, all in coco,

 

[Metrix]

Ph of your nutrients should be about 5.5-6.0

Yes it is, 5.8 mostly

 

[Metrix]

Id think so, assuming not organic feed.

(5.5-6)

Yes, synthetic A+B that I use since years for hydro plus some extra supplements,

 

[Aqua Man]

There arw a LOT of factors that play into light tolerance. They are in a completely different media, probably different ages etc. etc.

This plants have light and heat stress also. But again there can be many reasons… humidity, temp etc etc etc.

Up to you what to do but thats lights stress 100% to the point of bleaching

 

[Metrix]

There arw a LOT of factors that play into light tolerance. They are in a completely different media, probably different ages etc. etc.

This plants have light and heat stress also. But again there can be many reasons… humidity, temp etc etc etc.

Up to you what to do but thats lights stress 100% to the point of bleaching

Yes it is different media, I lowered light power, plant age 3 weeks, different facility, temperature 23c, humidity 54%,

 

[Metrix]

lamp turn down to 30%, distance 60cm to canopy, all did 6 days ago, new leaves showing same symptoms,

what I did 2 days ago, to repot her too airpot with 50/50 vermiculite perlite mix, before was fabric pot with 70/30 what was mich to wet
EC 1.0
pH 5.8
Temperature 24c
Humidity 53%