I have a problem,is there someone to help me?

[Pavlin]

Is this deficiency?

 

[bird mcbride]

For starters you could have taken the plastic off of the rockwool.

 

[churchhaze]

It looks like pH. What's the pH of your nutrient solution?

 

[Pavlin]

ph-5,8-6,2
ec-1.4

 

[Purplecheezy]

can anyone diagnose this problem for me?
https://www.rollitup.org/marijuana-plant-problems/740876-grow-box-conditions-ph-problem.html#post9732059

 

[Mr John]

Try this:

https://www.rollitup.org/nutrients/712483-nutrient-pest-prolem-solver-pictorial.html

Plus it looks like there is moss growing on your rockwool. They sell covers that keep light off preventing
moss. Not sure if moss hurts but I bet it doesn't help.

 

[Pavlin]

Thanks, Mr.John!I think it's a lack of nutrients and I intend to raise the level of concentration of the solution.

 

[BCOGYODA]

Your ec is way too high for plants of that size. Your ec equals almost 1000 ppm With plants that small only having a couple sets of leaves you should be down around 500 ppm or .7 ec
And you should have your RW covered by the hydroton and yes no wrap on the RW.
Are they grown from seed or are they clones. If you continue 1000 ppm they will shrivel up IMO. Flush and give low dosage nutes.

 

[Pavlin]

from seed. .1,6 = 800-1000ppm.until now it was 1.4...do you know that is a good variant up to concentrate the solution?

 

[BCOGYODA]

from seed. .1,6 = 800-1000ppm.until now it was 1.4...do you know that is a good variant up to concentrate the solution?

Well your location says the Netherlands so I was going on a European E.C. conversion formula to PPM which would be around 900ppm. A North American conversion with NA TDS gauge would be a bit lower. Which 900 ppm is much to strong for those little plants and especially since they are from seed. Clones from large strong mother plants can take a bit stronger E.C. PPM than a seeded plant of the same size.
Sorry I don't understand this question: "do you know that is a good variant up to concentrate the solution?"

 

[Pavlin]

I mean, is it a good variant to raise the concentration of the solution?

 

[BCOGYODA]

I mean, is it a good variant to raise the concentration of the solution?

Raise the concentration? Do you mean to make your feeding solution stronger? If that's what you mean then NO! You should make your feeding solution weaker. Around a .7 EC or 500ppm equivalent strength solution.

 

[BCOGYODA]

But you should flush them for a couple of days first with a very weak solution of 100-200ppm then get back to a 500ppm strength feed until you see some positive growth.

 

[Pavlin]

Then what's the problem if it is not the solution?

 

[BCOGYODA]

Then what's the problem if it is not the solution?

There must be some translation confusion going on here with us. The solution IS the problem. It is TOO STRONG. TOO HIGH in E.C.

 

[Pavlin]

1,4ppm is high?ok 1.2 is good or 1?

 

[Mr John]

Thanks, Mr.John!I think it's a lack of nutrients and I intend to raise the level of concentration of the solution.

You are very welcome, hope it helps you. Lord knows when I start my grow in 5-6 weeks from now I will be asking for help/advice also!

 

[Dcheald]

he said .7 three times... sorry if i sound like a dick but .7 (0.7)

 

[Mr John]

But you should flush them for a couple of days first with a very weak solution of 100-200ppm then get back to a 500ppm strength feed until you see some positive growth.

Pavlin,

Yoda is giving you great advice here. You are over feeding your plants! He is saying to weaken your solution dramatically for a few days (100 - 200 ppm), then raise your solution strength up to 500 ppm and see how your ladies react.

 

[churchhaze]

1.4ec isn't shockingly high and I doubt it's the problem with the plants. Everyone in the help section here advises what I'd consider starving babies "so they won't die".

1.4ec isn't burning the plants.

What nutrients are you using and at what ratios? How much of each bottle.