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lime green and curling up leaves, burned edges

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forums; Hello! This is my very first post here so please bear with me. I'm growing 6 GHS Church plants under ...
  1. #1
    Stranger Stranger
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    Default lime green and curling up leaves, burned edges

    Hello!

    This is my very first post here so please bear with me. I'm growing 6 GHS Church plants under a 600W hps light, the plants are one week into flowering (almost 6 weeks old) and the leaves are curling up, and two of the plants are becoming very very light green, lime-like color. I repotted them 2 days ago in 13 litre pots (because they were all a little root-bound.) Also, some of the leaves have burned edges, not much, but still.

    The problem is not new, and I wanted to try everything before coming here, but nothing helped. I thought the curling was due to low humidity in the room (30-35%), or because the fan was blowing directly into them. I use only organic fertilizer, and never used full-strenght dosage. After repoting them 2 days ago I also watered them, and I noticed little white bugs on one of the trays. They were really small, like 0.5mm or even less. They were jumping around and before I could get a decent pic, they were gone.

    Otherwise the plants look ok, they are 40 to 50 cm tall and super-bushy, growth seems normal. Room temperature is between 24 and 30°C, humidity from 40-60%, pH of soil is around 5.7. Some of my friends who are also growers think that my plants have trouble dealing with the heat, but the leaves were curling even when temps were around 21° and never exeeded 25°C.

    I am a noob at indoor growing, so please have some patiece. I'll post some pics as soon as I can.

    Excuse me for my imperfect english, I will improve

  2. #2
    jvo
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    Well for starters 30C is a little high for your flowering. How far is your HPS from the plants and what kind of air flow do you have? Also pictures would really help to diagnose this and pretty much any plant issue you could have.

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    Ganja Smoker Pot Head WhiteRooster's Avatar
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    what is the pH of your nutrient solution and fresh water?

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    Well I havent really tested nutrient solution pH, but fresh water pH is 6.5.

    I have a 1.2x1.2x2m box and a cooltubed 600W with a 260cfm(450m3/h) fan for exhaust.

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    jvo
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    Well that could be your problem for starters, you could be locking nutrients out. Test your nutrient solutions PH before feeding the plants and I recommend 6.2-6.8 PH in soil.

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    Mr.Ganja Mr. Ganja lahadaextranjera's Avatar
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    I use only organic fertilizer, and never used full-strenght dosage. After repoting them 2 days ago I also watered them,

    You are not watering correctly and the roots are starved of oxygen. If u just transplanted then how would it need water 2 days later. You want the roots to grow down in seach of moisture. When u transplant u don't need nutes for the first week or so...

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    Quote Originally Posted by lahadaextranjera View Post
    I use only organic fertilizer, and never used full-strenght dosage. After repoting them 2 days ago I also watered them,

    You are not watering correctly and the roots are starved of oxygen. If u just transplanted then how would it need water 2 days later. You want the roots to grow down in seach of moisture. When u transplant u don't need nutes for the first week or so...
    I'm sorry, what I meant was that I always use organic fertilizers, no chemicals...I dont use them all the time, I add them to water every second or third watering, and never full strenght.I use very little fert because I'm still learning.

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    IMG_1689.jpgIMG_1690.jpgIMG_1691.jpgIMG_1692.jpgIMG_1693.jpg

    So here are the pics as promised. The first 3 pics are from one plant, the second 2 are from another. Please help me with these troublemakers

  9. #9
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    bump anyone?

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