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Thread: Seedling leaf discolouration

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    Default Seedling leaf discolouration

    Hi, I wonder if anyone would be kind enough to give some advice regarding leaf discolouration on seedlings. I am mostly inexperienced growing skunk-or any plant... The seedlings are about 3 weeks into grow but don't look very healthy with browning of leaves and noticeable wilting. I'm using a heated propogator with avg temp 70-80f on 18/6 cycle. Propogator lid has been removed for most of lights on and put back on for the dark cycle as thought it would have helped during the lower ambient temperature in the evenings, possibly a mistake.. should I have used the dome at all after germination? Then there is the grow light.. I've been using a Mars Hydro 48 led approx 20" from top of plants. It seemed to work great at first but now I'm wondering if the light intensity has been to great for seedlings. The soil is a mix of seedling starter, perlite and a small amount of worm castings. Watering generally when the top soil has began to dry with bottled water PH around 6 to 6.3 and no nutrients. I have attached photos and would be very grateful if experienced growers can advise, heat stress, the led light, under/over water, nutrient deficiency etc. Thanks all, thctalk members. Phil.
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    Repot them mate, they need food

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    an burry up the stems a bit they done some stretching. how many you doin?



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    Quote Originally Posted by forever_TT_green View Post
    Repot them mate, they need food
    Thanks mate. Maybe a slightly larger pot size? Will re-pot them, fresh soil can only be good. I've been looking to acknowledge your help with a thanks but can't seem to find the icon for that. Sorry, im a new member but will get the hang of it.

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    Quote Originally Posted by philipg1969 View Post
    Thanks mate. Maybe a slightly larger pot size? Will re-pot them, fresh soil can only be good. I've been looking to acknowledge your help with a thanks but can't seem to find the icon for that. Sorry, im a new member but will get the hang of it.
    Why not repot them into big pots full of coco coir

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    Quote Originally Posted by joker_the_smoker View Post
    an burry up the stems a bit they done some stretching. how many you doin?
    I'm doing six, different types but all fem. I've just replaced the mars led with a 135w CFL just in case the light wasn't helping. Lumens seemed OTT for seedlings but if that was the case they wouldn't have stretched too much for light (I think, but what do I know.. :-)). I know It's a learning curve/experience but would be a shame to lose all of them but with foresight it was rather foolish of me to germinate so many on first attempt. Thanks ☺

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    Quote Originally Posted by B.A.BARACUS View Post
    And don't use Bottled water either.. Cal/Mag/ & Pottasium are not available under 6.5. Use tap water for a safer option..

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    Thanks. I wasnt aware of that and thought the ideal was just 6 or just over. I have PH up/down so maybe bottled with PH 6.5 for C/M/P uptake. I'm not questioning your advice at all (very grateful) but just thinking about flouride and our tap water is not the best tbh. Think it was around PH 8.3 out of the tap when I tested it but guess that's normal.

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    Quote Originally Posted by philipg1969 View Post
    Thanks. I wasnt aware of that and thought the ideal was just 6 or just over. I have PH up/down so maybe bottled with PH 6.5 for C/M/P uptake. I'm not questioning your advice at all (very grateful) but just thinking about flouride and our tap water is not the best tbh. Think it was around PH 8.3 out of the tap when I tested it but guess that's normal.
    8.3 ?.. Jeez. that's super high!. What does it raise to when you've let it stand for 24hrs & all the nasty's have dissipated ?.. Your best bet is to not alter the ph at all & let the soil do it's stuff.

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    Plants look hungry & cramped! Time to re-pot.
    Not an expert on soil but everything I've read and seen suggests you don't fiddle with the PH, soil will balance itself out!

    ATB

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    Quote Originally Posted by forever_TT_green View Post
    Why not repot them into big pots full of coco coir
    Okay, will do that. I've got a bag of coco but thought that was for later on, veg period when plants are larger and transferred into grow tent. So just the coco, no perlite, castings or seedling potting soil? Also, do you mean its time to transfer them from propogator into the grow tent and start using the hps light. Sorry, not being lazy.. I don't mind reading up/googling for information but sometimes it's conflicting and would rather follow your/other members sound advice on this.

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    Quote Originally Posted by philipg1969 View Post
    Okay, will do that. I've got a bag of coco but thought that was for later on, veg period when plants are larger and transferred into grow tent. So just the coco, no perlite, castings or seedling potting soil? Also, do you mean its time to transfer them from propogator into the grow tent and start using the hps light. Sorry, not being lazy.. I don't mind reading up/googling for information but sometimes it's conflicting and would rather follow your/other members sound advice on this.
    Its upto you what you do mate, if they were my plants i would pot up into coco only in 10 or 6L airpots.... and start feeding with an ec of 0.8 ph 5.8 and foliar feed the anb for a few days also... out the prop and into the big tent

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    At 3 weeks you're well into veg!
    If you can get some Great White to dust the receiving holes in the coco with it'll aid root growth, also as indicated above, bury the stems deep to nullify the stretch you've got going on. Don't over water, treat 'em mean, get them roots actively searching for their nourishment.

    ATB

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    Quote Originally Posted by forever_TT_green View Post
    Its upto you what you do mate, if they were my plants i would pot up into coco only in 10 or 6L airpots.... and start feeding with an ec of 0.8 ph 5.8 and foliar feed the anb for a few days also... out the prop and into the big tent
    I re-potted them yesterday in coco then sprayed the leaves with a very diluted superdrive, just 1ml to litre of water. You were right of course, looking at the roots they were pushing against the edges of the pot. So thanks, even if only half come back to health it's better than losing the lot.🤗cheers matey.

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    Quote Originally Posted by philipg1969 View Post
    I re-potted them yesterday in coco then sprayed the leaves with a very diluted superdrive, just 1ml to litre of water. You were right of course, looking at the roots they were pushing against the edges of the pot. So thanks, even if only half come back to health it's better than losing the lot.🤗cheers matey.
    No probs mate, just remember to feed them... do you have an EC pen? What nutes do you have?

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    Quote Originally Posted by forever_TT_green View Post
    No probs mate, just remember to feed them... do you have an EC pen? What nutes do you have?
    Well I'm going to be honest I had to Google ec when you mentioned it. I've just got one (ec tester) and also a TDC Meter as they were only less than a tenner for both on ebay. On the nutrients, sensizym, sensibloom, big bud, formulex and overdrive. So you did me another favour mentioning ec, really never heard of it. So as it determines nutrient uptake... most important. Besides, nutrients ain't cheap so no point in wasting them. Thanks ��

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    Quote Originally Posted by philipg1969 View Post
    Well I'm going to be honest I had to Google ec when you mentioned it. I've just got one (ec tester) and also a TDC Meter as they were only less than a tenner for both on ebay. On the nutrients, sensizym, sensibloom, big bud, formulex and overdrive. So you did me another favour mentioning ec, really never heard of it. So as it determines nutrient uptake... most important. Besides, nutrients ain't cheap so no point in wasting them. Thanks *Š
    EC stands fr electrical conductivity 👍🏻 if you get stuck mate drop me a pm i dont mind helping you out.... Adjusting your PH is very important in coco mate, bare that in mind an you will be sweet.

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    Quote Originally Posted by forever_TT_green View Post
    EC stands fr electrical conductivity 👍🏻 if you get stuck mate drop me a pm i dont mind helping you out.... Adjusting your PH is very important in coco mate, bare that in mind an you will be sweet.
    I appreciate you taking the time, other members as well. If I had as many years experience in growing it as I have smoked it there wouldn't be a problem lol. So vitally important to keep the water PH correct now they are in coco. I still have them in the prop, makes sense until they pick up. Besides, the tent is in an outbuilding and even with a 400 hps on for over an hour its barely reaching 60f in there at this time of the year. Small tube heater maybe... Thanks mate 🤔😊

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    Hi, just an update on the grow. Sticking them in bigger pots, coco air and nutrients what a difference that made.20170109_181401.jpg20170109_181355.jpg20170109_181322.jpg

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