[Bluntpower]

Hello fellow autoflower growers

First time grower, 1 of them seems to have a deficiency.
I think it is nutrient burn signs, what do you think..?

[Lester Beans]

Well it is a young plant so that's entirely possible. How much and of what have you been feeding?

More details the better for us to diagnose.

[Bluntpower]

Originally Posted by Lester Beans

Well it is a young plant so that's entirely possible. How much and of what have you been feeding?

More details the better for us to diagnose.

Hello,

Started out in Root-it sponges (European version of Rapid Rooters) which i pré-soaked in lukewarm water 5.8 + First Feed.


Basically all i've done before that deficiency appeared.
Except for a couple of drops pure water 5.8 to keep the top of the sponges moist.

What i do not understand is i have 7 of them:
3 show the same deficiency as the first pic above. (yellowing of leaves, tops pointing UP)
2 show a entirely different deficiency. (leaves very dark, small, leave tops pointing DOWN)
2 are bigger than all the rest and look as healthy as they could be.
While all 7 have been treated exactly the same, same everything..

[Dog Star]

Too much N for little ones.. also PH is fucked up in wrong side,too acid for sprouts..

this are not like rockwool that you need to PHed them in 5.8..

this ones you need to use 6.5 or 7.0,normal PH.. otherway you made too acid
and then little ones have probs to grow...

those one in pot you flush good with plain water,its good if water is close to 7.0 PH
you dont need to lower him down.. and after you flushed just live like that
she bounces back in normal after shes dry good..,then later after shes show first defs you use easy complete nutes.

Kind regards

[Bluntpower]

Originally Posted by Dog Star

Too much N for little ones.. also PH is fucked up in wrong side,too acid for sprouts..

this are not like rockwool that you need to PHed them in 5.8..

this ones you need to use 6.5 or 7.0,normal PH.. otherway you made too acid
and then little ones have probs to grow...

those one in pot you flush good with plain water,its good if water is close to 7.0 PH
you dont need to lower him down.. and after you flushed just live like that
she bounces back in normal after shes dry good..,then later after shes show first defs you use easy complete nutes.

Kind regards

Thx for your answer, very helpfull
The sponges are in coco/perlite pots, that's why the ph is 5.5to 6 when i water.
If i understand well i needed to treat those sponges like soil ph'wise, that's why the 5.8 was too low..?

[Dog Star]

Its too low if its 5.8 in those sponges.. raise this numbers and they will grow normal.

[Dog Star]

That medium you use also looks dubious.. as i sees you use root plugs that are for
organics and soil sowing together with soilless medium..

better way will be rockwool and then to use those 5.8 PH numbers if you wish to feed plant this way.. whithouth a soil..

[Dog Star]

Different spreading of roots inside root plugs than in rockwool made problems for plant that shes drink normaly... she suffocates inside this root plugs as there is not much air inside them if we compare them to rockwool aeration.

Rockwool is more aerated and alouds plant to drink more normaly from soilless medium,
organic root plugs are great if you sowing inside normal soil mix cause roots
spreads differently inside this kind of medium and plant use soil life that
helps her to feed,breath and progress more easier than in soil whithouth a life
and inert medium soil mixes.

For inert soil mixes a rockwool is a must..

[Bluntpower]

Originally Posted by Dog Star

That medium you use also looks dubious.. as i sees you use root plugs that are for
organics and soil sowing together with soilless medium..

It's nothing fancy, 50/50 coco & perlite.
I definitely shouldn't have used those sponges i understand now.
The roots are piercing through them since a couple of days now, that should improve i hope, not much i can do anyway now, bit too early to remove them :(

Thx for your help!

[Bluntpower]

I just noticed that i might have the wrong CalMag too...
I couldn't really find it myself and someone from their team chose that bottle for me.

It says on the bottle "give during entire FLOWERING period"...
It contains high N :(

Are there different kinds of CalMag maybe..?
Do i need to get another one..?