Seedlings turning yellow and plant leaf sides crumbling up.

[Meirens]

hello,

This is the 1st time i have such problems. The plants are growing really slow, and the leafs are getting yellow. What should i do to turn them healthy green and faqster growing?

I am using 4 CFL 23w bulbs, and 2long 37w cool white bulbs.
Temperature is around 20C
Strains, 2big ones are Amnesia lemon clones. 1 is Jack clone, the others are some X strain seedlings.


AMNESIA LEMON CLONES


X crossing, the same as in the next picture. As you can see, the plant leafs even dont look like an my plant leafs, and they are yellow.



<< Crossing from my 2m plant clone fem. and some autoflowering guy.
JACK CLONE >>>>










Please help )

 

[inhaleindica]

What soil and how much nutes? I am not sure if your over nuting something and under nuting something.

 

[Figong]

What's your pH at? using RO / pH'd water? Any nutes? If so, which and what amount did you hit `em with? Pale green/yellow top leaves point to 2 trace deficiencies... S & Fe - but since they look to be relatively new clones, I wouldn't go on that alone, and would also consider progressive N-def.. at a quick glance. The more info you can provide us the better. If the medium is Miracle Gro, you may have a fun time with this project.

 

[Meirens]

What soil and how much nutes? I am not sure if your over nuting something and under nuting something.

no nutes ......

 

[Meirens]

What's your pH at? using RO / pH'd water? Any nutes? If so, which and what amount did you hit `em with? Pale green/yellow top leaves point to 2 trace deficiencies... S & Fe - but since they look to be relatively new clones, I wouldn't go on that alone, and would also consider progressive N-def.. at a quick glance. The more info you can provide us the better. If the medium is Miracle Gro, you may have a fun time with this project.

Ph-7 no nutes, the medium is 6,5ph, and the water 7ph. I have a ventilator in, maybe it cooles the temperature of room, i really dont know.

 

[inhaleindica]

What kind of soil is it in? Give it some grow nutes. I still can't figure out why the tip is burned if you aren't using any nutes.

 

[Figong]

What kind of soil is it in? Give it some grow nutes. I still can't figure out why the tip is burned if you aren't using any nutes.

Miracle Gro can do that, with their time release ferts that likes to toy with smaller/underdeveloped plants.

 

[Meirens]

What kind of soil is it in? Give it some grow nutes. I still can't figure out why the tip is burned if you aren't using any nutes.

Maybe it`s because of water? I am using water from Borehole.

second problem is that plants are not growing, they stays at the same size. >> sollutions?

 

[420 happends]

hmm id say try new soil like fox farm happy frog or another brand, and ph your water to bout 6.5ish then pick up some ferterlizer im currently growing some of my personal strains and i just got this stuff called sea grow 16-16-16 and my plants are loving it there getting soo big and healthy, so id try getting some type of food for your plant..