American friends save me from this nightmare please!

[Strudel]

Two plants have very slow grow, little rough surface leaves , develop of the entire plant is vey slow with little curly leaves...
Now is already two weeks iam giving just normal water PH 6.0 and EC 0,4

Iam using coco coir , 400 w light 18/6 light cycle , room temperature is from 17 at night till 25 degree celsius with light on ...and 45% humidity , light distance is ok

Only those two plants have problems , the others looks fine

Plants are 1 honey banana and 1 exocent haze

Can be nutrient lock out or a kind of russet mites... As one of them had it before.... But the symptoms and appearance of leaves were different... So can be just lock out ....but who know?!

Please help me, iam lost!

 

[Strudel]

More photos

 

[Strudel]

More photos

More photos

Some more photos.

 

[Strudel]

Need your advise

Need your advise

Need your opinion.

 

[HushemFlupskluk]

hi there. Curly leafs could just be in the genes. But the purple branches indcate cold weather imo. I had small curly leafs and purple stems in my round 8 wich can be viewed in my siganture.

 

[Strudel]

So you think is due to cold temperature...but as i wrote before in the room there is no cold temperature And others plants just near those sick plants are normal...so i guess is not connected with temperature.thanks anyway

 

[Strudel]

So finally?

So finally?

Nut lockout , russet mites or cal mag deficiency?

 

[OrgrO]

I would thoroughly check the plants and soil for pests. Last time I had a plant that looked like that, water consumption had slowed down also. Close inspection revealed some kind of aphids or mites in my soil.

 

[Tynehead Tom]

just a guess but.
if there's no bugs, I'd say they need food and higher RH
I'm Canadian tho so what do I know eh?

 

[Mystic Funk]

looks to me like you need to start feeding those plants. it looks like they have many nutrient deficiencies phosphorus, calcium, magnesium, iron. it would be a good idea to check your soil ph too. you may have a ph problem that is causing some or all of them.



peace!
-mystic

 

[Wendull C.]

You have a lock out due to too much salt in your medium. leech your plants heavily and feed them a weak batch of ph'd nutes afterwards.
Whenever your leaf tips curl like that you are feeding too much.

 

[Strudel]

What is RH?

And before i was feeding them regulary and after some weeks start making tiny leaves with a rough surface and slow grow in general... People said to me that might be a nutient lock out and to feed them just with normal ph 6.0 water with no added nutrients...now 2 weeks and still no recovering...


Rough and dry surface if leaves is made by what usually?

Thanks so muc for your help.

 

[Jonny Lan]

just a guess but.
if there's no bugs, I'd say they need food and higher RH
I'm Canadian tho so what do I know eh?

? you mean to tell me you never knew American cannabis plants are different than Canadian marijuana plants and that they go through their own American problems? The plants not having easy access to healthcare is one of them.
ya gotta read more buddy lol.

 

[Tynehead Tom]

? you mean to tell me you never knew American cannabis plants are different than Canadian marijuana plants and that they go through their own American problems? The plants not having easy access to healthcare is one of them.
ya gotta read more buddy lol.

LOLZ good one


I thought the OP was only giving the water with low ec. I assumed that's all they had gotten in their lives. I also see multiple deficiency going on so would agree, check and correct medium's PH with a flush of light nute solution , maybe add some epsom salts to that too and see what happens.

 

[Strudel]

"Leech your plant heavily and feed them a weak batch.." in other words mean:? To flush it with normal ph water and after. Sorry really but i did not undesteand clearly this advise

Sorry iam italian and do not undesteand very well english.

 

[Lester Beans]

You need to feed the plant. Give it a good feed with a well rounded nutrient.

Make sure to pH the nutrient solution to 5.8 for hydro, or 6.0 for Coco, or 6.8 for soil.

Your pH is too low and you are not feeding enough.

Good luck!

 

[Strudel]

Ok so finally after all your opinions i undestood:
Flush (or no nut water for one week ) and after feed by give light feed water little by little ( starting with ec 0,6 for example and going higher)


Is it correct? Cleaning the salt of the medium and after giving well balanced nutrient ph'h water

Is it this the final issue? Say yes or no please

 

[Tonygreen]

That looks like salt stress. You can do slurry test of 1 part medium one part water and check the EC to confirm.

Flush fast before they die. Pour fresh water only until you see 20-30% runoff of what you put in.

I just had this issue not too long ago, droopy leaves, perky stems... They look hungry because your roots are not working properly from too high of salt damage.

 

[seeded]

To me it looks like you flushed most of the buffer away and have been starving them since. That said it doesn't really matter what's going on because the solution will be the same, flush the hell out of the pots and then give them a decent feed with some added cal/mag and a little pk13/14 or similar to help make up for the immediate deficiencies the plant faces.

In the future remember when in doubt, flush it out. If you reset the medium with a flush and feed it'll solve almost every issue you're ever likely to see on a plant and if it doesn't it just eliminated those options making pinning down your actual problems that much easier to do. Also worth mentioning is if you hand water coco with little to no run off a monthly preventative flush massively cheers up the plants and keeps them happy until just before harvest when you cut off their food supply.

 

[Strudel]

Thankyou everybody for your help!