Strange leaves on young plant

[Cibin]

..this is about 3 weeks old B3 (from seed), in soil and under flouros.

It has some strange damage on leaves and I have no idea why?

Can you check it please and give me some advice what´s wrong/what to do?

thanks very much!

 

[fjällhöga]

Do you have them in pure potting soil ??? or is it amended with some perlite or some other soil aerating things ???

 

[Cibin]

There is about 15% of perlite in the soil.

 

[fjällhöga]

ok that sounds quite nice ... , i prefer up to 50% perlite in my mixes

did you check the ph of the run off water after watering ??

 

[Cibin]

well, to be honest i did not, as the soil has pH 6 - 7 (written on it) and i am using distilled water with pH around 6-6,2 (measured few weeks ago, but i am buying still the same "brand")
..and i was thinking that soil is partly self-PH-correcting, partly that the PH isn´t as much importatn while growing in soil.. and other two plants are absolutely healthy (so far)

Maybe you are right FJ, i should check my pH first (only if i remember where the f*ck are those test-stripes i used last time.. ))

Thansk for your time!
C.

 

[Blackvelvet]

Start by taking the plastic off the soil mix. Plants can't live on just plain water forever.

 

[MynameStitch]

First thing first, distilled water will have low ph due to hardly anything being in it; 2nd problem; distilled water has nothing in it; so your plant is not getting the proper micronutrients.

I would use a different water and making sure there is NO sodium in it.
that is the start of a ph issue it looks like I would test the ph and stop using distilled water. Or your soil mixture is to rich but I would say more ph issues

all strains are different in terms of care; so if they are all in the same stuff but different strains then the one that is having problems may not be able to hack it as the others.. but that is IF you are growing different strains

I would test ph and add lime to your soil mixture anyways since calicum and magniseium are in dolomite lime you will be giving your plant micros in the process and since the plant is being starved of micros from the water; your plant will be happy you give it the lime lol.

People do not realize that water is a important part not just for the plant to live but it needs the nutrients that are in the water and when you have water that has none it's like not feeding your plant.

Have you fed your plants yet?

WHat brand of soil mixture are you using?

 

[Cibin]

firstly - Thanks very much everybody§

ph of distiled water is cca 5,8
pH of runoff water is cca 5,9 (i am using no ph meter, just some kind of cheap test-strips)
EC of runoff water is 0,14

soil is quite good quality "Baumax" soil, imported from the Netherlands (not a no name shitmix) it is airy and pre-fed on EC 0,5

My plants are being fed now for about 10 days with mix of Plagron START-UP and Cropmax (for good root development).. depending on their age the EC was from 0,2 to 0,6 last time (when soil was almost nute-free)
- i am watching them every day for signs of nute-burn, because i know they can not handle big doses of nutes yet..

And this is why i am asking you for help, as this doesn´t seem to me to be a nute-burn or defficienci, it is more likely some kind of fungi or sh*t like that.... or not?

I am using distiled water because of zero EC, my tap water has EC 0,7 so there is no space for nutrients..

.. yet about the "plastic cover" - it is there to protect roots from light (then they can use whole space of pot for roots - and it really works, recomended by Sannie..)

Once again, thanks very much for your comments and please excuse my bad english!

Thanks
C.

 

[sannie]

Hey Cibin
First when you don't have prper meausurement tools its better not to play with youre ph.Distiled water does not content the nesceserry lime to buffer youre soil.
Second is water coming under youre pot is not the meaning of watering youre soil.Soil must be moisty and airy not wet!

The cover on youre soil is indeed good fore more reasons like reflecting light instead of absorbing what means the tempin youre soil will rise.There is less water damping so last ballast.The upper site will be rooted and give you quick 20% more effeciency.

good luck with youre grow

greetz sannie

 

[MynameStitch]

First off stop using Plagron START-UP, that is the equal value of superthrive and should only be used sparingly!

TRo many vitamins and minerals builds up quickly; this is not a fert you use weekly.

Your cropmax is not very good either I would suggest getting a holde of some different ferts.

Distilled water has low ph you have nothing to balance that out in the soil mixture, like dolomite lime......

Stop using distilled water

I am using distiled water because of zero EC, my tap water has EC 0,7 so there is no space for nutrients..

THat only counts if you are growing in hydro; you are not growing hydroponics you are soil growing

What is added in your soil mixture? Is is soiless or soil?

WEHat I mean by soiless is does it have peat moss? Perlite? and other additives or just plain soil with nutrients added?

If your soil growing then your ph is off and so is your water ph it's to low like I said it looks like the start of a ph issue and your ph is off

U will need to get lime for your grow, dolomite lime and stop using distilled water you are robbing your plants of even more nutrients because distilled water has to low of PPM/EC which your plant is not getting the micronutrients it needs from the water.

 

[Cibin]

OK, no more distiled water!
From today i will stop using "Start-Up" and start using regular grow nutes.
To fix the ph shouldn´t be a problem too, i hope..

Thanks very much everybody!!

 

[Cibin]

..sorry K_Ch, but the white plastic is really not causing over-watering, the soil under it is moist but not wet.. and for sure is airy enough....the air flow is still "possible" under the plastic.. check out Sannies results with this plastic cover on is 60l pots, they speak for themselves... i am not as big asshole as it seems ) The plastic cover has nothing to do with that one not so healthy plant (1 out of 3)..

 

[Johnny Rotten]

Looks like over watering to me as well....but if you don't want to listen, then why give advice? Why don't you find something to raise the plastic up above the pot lid so they can breath, maybe cut up some spare pots and slip them around your plants and use a bit of cardboard as a backing. Why don't you eliminate this possibility while there still young before there really ****ed??

 

[HeadyPete]

Hello,

Stitch what do you think....maybe a P def? That dark splotch on the leaf pic looks like P def. Definitely the ph is too low and probably lower than the strips indicate. If you use tap water, bubbled to get the chlorine out (or left in an open container for a few days) there is usually good amount of Cal and Mag, and the ph is usually higher. My tap water is 8.0, down to 7.4 when I add my nutes, then adjusted to 6.5 with PH down (I am trying fulvic acid as an organic substitute for phosphoric acid). The reason I go down to 6.5 is to counter the lime in my coco mix, and leave the soil ph at a nice 6.8. Lime was mostly used to offset the acidic peat in most mixes, but coco is ph neutral, so I could omit the lime, and not fight the high ph, but then would possibly have to add CalMag to compensate. My LUI likes the Cal and Mag, and I am now backing off the additives to see if the tap water can provide enough of these secondaries.

The plant doesn't really droop like it is overwatered, but from what I can tell 3 weeks in and the plant hasn't had a shot of balanced nutes yet.....

BTW, PH is crucially important with anything you grow, anyway, soil, hydro, on the moon, etc. PH is the first variable that must be mastered and maintained. You need a digi ph pen to get good accurate readings. It IS that important to the success of your crop.

Good luck!

 

[Cibin]

This is how they look like today.. (after transplant into bigger pots - their old pots were full of roots from top to bottom)










diff. plant....

 

[MynameStitch]

It may be heady...... it's either that or ph, because some strains depending on the ph sometimes can mimic p issues.....

One thing I will say is that plant is far from being overwatered; it's not drooping and at this size of plant it would start to yellow slightly if overwatered badly..


I think with him using distilled water and no nutes he is causing both ph and nute issues........ PH has to be fixed first then fix the nute issue.