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Thread: Yellowing leafs on young plants

  1. #1

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    Default Yellowing leafs on young plants

    So they are in bio biz light mix, no nutes, watered once in 3 weeks (pots still very wet). I have the light just above the recommended distance (can?t get it any higher in my propagator tent) but I suspect this could be the issue as it doesn?t have a dimmer so the plants are currently both barrels. The light is a ?300w? Mars led. Some of the affected leaves are curling upwards slightly. The seeds were white widow and white widow CBD. Temps are around 28c but lights out 19-20c

    All/any ideas welcome! Thanks :-)








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    How close is the light? I found my mars hydro 300 caused bleaching on young pplants. Although yours seems to be very high up..I dont like LEDS for seedlings. They always seem to go a bit weird until the strengthen up a bit

    Did you say you only watered once in 3 weeks? BUt the pots are so wet! How much water did you give them

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    Hey mate,

    The light is 24 inches above them which is (I think) what the book recommended for seedlings.

    They have only been under this light for about a week, before that they were under this light. This one did nothing for them aside keep them alive for 2 weeks lol, I saw next to no growth under it, all the growth has happened in the last week since they went under the Mars...

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    I would be looking for another cause for your problem beside the light. I have a 220W Ture pull on my plants just 12", and I show no signs of light bleaching or curl up leaves. Pretty sure something else is causing your problem. JMO

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    Do you think it could be over watering, as the pots are still very wet?

    Other than that maybe the light soil was still too rich?

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    Quote Originally Posted by Erby View Post
    Do you think it could be over watering, as the pots are still very wet?

    Other than that maybe the light soil was still too rich?
    My guess would be the soil.

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    Quote Originally Posted by hotshot View Post
    My guess would be the soil.
    Thanks Hotshot. If it is the soil is there anything that can be done at this stage or just have to ride it out?

    Thanks!

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    Here are some better pics





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    cal-mag deficiency

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    Lighten up on the watering. And give some what Creeper said next time they are ready for water. ^^^
    Last edited by hotshot; 18-12-18 at 12:31 PM.

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    once in 3 weeks!! i usualy start in increments of 50ml! from seedling! every 2 days currently using 200ml on week old seedlings n 100ml on the two a week behind!
    soil must be compacted if its still heavy! or theres not enough drainage holes at the bottom!
    when you pot up make sure to loosen the soil a tad n thow a handfull of perlite at the bottom of the new pots

    hope you get to the bottom of this erby
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    Quote Originally Posted by lipnobody View Post
    once in 3 weeks!! i usualy start in increments of 50ml! from seedling! every 2 days currently using 200ml on week old seedlings n 100ml on the two a week behind!
    soil must be compacted if its still heavy! or theres not enough drainage holes at the bottom!
    when you pot up make sure to loosen the soil a tad n thow a handfull of perlite at the bottom of the new pots

    hope you get to the bottom of this erby
    Yeah its a mad thing hey lol.

    The only thing I've done different this time is I gave the whole pot a really good watering before I transplanted the seedlings in them, and they have been under a propagator hood all this time. So Ive just removed the hood now as they were beginning to max the height of it.

    The soil is still wet all the way to the bottom... haaa I want it to dry them out so I can water with the cal mag when it turns up tomorrow but they dont need watering at all yet lol. The bottom of the pots have plenty of holes like a normal pot so Im not sure lol.

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    most pots ive seen on here always have a few extra holes drilled!
    ah that explains the heavy pots now!
    get the hood off them n let it dry up, the cal-mag is folair fed so you can spray at lights off the whole plant just not the soil

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    i think you need different lights and or different nutes

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    Just transplant into a larger pot! Fill up the larger pots with good new substrate. Its not too late if you want to save those plants. If you are having problems with a watering methods and would like some help i would glad to help you. Those Plants are Super Fixable!

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    Thanks for all the input guys, me bitches seem to be a lot happier at the moment.

    I think it was possibly down to the being under the hood for too long, the combination of very high humidity, the hood not allowing the soil to dry out so the roots could breath... I removed the hood a few days ago and they all seem much happier, they got a water today as the pots had dryed out properly etc.

    I've bought some Cal Mag but haven't used it yet, I'll see how they continue on first.

    Like Creeperpark says, I think its also time to repot them so I'll get that done today or over the weekend into their medium sized early veg pots...

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    Erby Don't pack your substrate when you refill the larger pots. Keep them loose so the roots will have an easy time growing. Also use the whole pot, fill them up to the top too say 1/2 in from the top. Then Wet to dry. No Nutes!

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    Thanks mate will do, they?re begging to look strong again now so fingers crossed for a smooth sailing


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    check the roots mate, sounds like either the roots are eaten or not growing into the soil. maybe too hot nute wise. Any bugs flying around in your tent around the pots?
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