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Thread: Northern Lights looking a bit sad.

  1. #1

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    Default Northern Lights looking a bit sad.

    Put this in my diary but I thought I'd try and get some traffic here as well.

    Two of my Northern Lights (Sensi Seeds) aren't looking as perky as the rest of my plants, one in particular is much worse, it's maybe 6 inches taller than all the rest but also a good week or two behind. This is the one I panicked about yesterday when I thought it had hermied, I've now spotted new sprouts on the to other NL's so all good lol.
    All plants are in 10L pots, 80/20 mix of Verve multi purpose and perlite, 600W hps and temps are a steady 25 lights on and 20 lights off, humidity fluctuates around the 40% mark.
    Every plant has had exactly the same so far, usually 2 litres of water with Plant Magic Bio Silicon (most feeds), Root Stimulant (every other feed) and a couple of Cal-Mag sprays, they also had molasses on Tuesday for the first time, no nutes as such at all so far. The two
    poorly ones had just water today in an attempt to pull them around.

    So the word on Google seems to be Nitrogen toxicity but the only Nitrogen is in the Cal-Mag isn't it? All the other plants look hunky dory and seem to be thriving.

    11th Nov3.jpg
    11th Nov4.jpg
    11th Nov5.jpg

    What's the crack chaps?

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  3. #2

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    I can see the clawing of the leaves and the colour looks a bit dark which would suggest too much nitrogen and the top of your plant doesnt look too happy does she,how close is the top to your lights? Hope someone can help you out, all the best mate!

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    Any chance that one is being hit by the fan? Maybe wind burn? 10liters sounds small for soil. Not easy finishing in 10 liters with a plant that size.

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    The light is about 2ft from the rest, this one is roughly 6 inches taller and I’ve placed it on the edge of the light trying to keep it out of the heat. They did have heat stress very early on but they looked to pull through ok but this one has always been slow from day one.
    I’m kind of sure this started to worsen after the cal-mag spray they got a week or so ago but maybe I’m imagining that lol.

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    Quote Originally Posted by CityDweller View Post
    Any chance that one is being hit by the fan? Maybe wind burn? 10liters sounds small for soil. Not easy finishing in 10 liters with a plant that size.
    I’ve moved it all around the groom mate, it’s currently farthest from the fan which is on its lowest setting.
    I guess I’ll know about the pot size when I chop them down lol, this particular one has always been slow though and I didn’t really train it like the others to avoid stressing it.

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    If not windburn then I would say nitrogen toxicity but that does not add up since she has not been fed grow and there is hardly any soil.

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    Did you double check the medium? I was having a right headache until I realised the hydro guy gave me hot soil instead of the light stuff i asked for.

    Being a stoner I assumed and didnt check for like 6 weeks haha
    Current grow: Cindy jocks & Royal Dwaft

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    Quote Originally Posted by UpT0wnSkunk View Post
    Did you double check the medium? I was having a right headache until I realised the hydro guy gave me hot soil instead of the light stuff i asked for.

    Being a stoner I assumed and didnt check for like 6 weeks haha
    How do you mean about the medium mate?

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    Your soil doesn't need any cal mag. Your problem is from adding cal-mag when you don't need it. You need to cut the cal-mag and run ro or rain water to fix the problem. That is, only if you want to get some buds off those plants!

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    Thanks mate, I gave them three foliar sprays of cal-mag I think, not used it since so I'll ditch it in the future. Would you recommend epsom salts as well with the water?

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    NO! If you are running organic soil i wouldn't give it any cal -mag at all! THOSE PLANTS SHOULDN'T GET ANYTHING at this point except water. You cant fix this problem by adding anything! You can still get some buds if you lower the toxicity of the soil. You can do that by just adding water. What kind of water do you use?

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    Just tap water which has been left to sit for a few days to get rid of the chlorine and stuff. I have two big 40 litre tubs which I fill every other week or so.
    So I take it you're not a fan of OT Bio Silicon and Root Stimulant additives?
    It's funny, I was talking to a long time grower yesterday and he said he started off the same as me, used loads of this and that in the early days, now it's just dead simple, water and nutes when needed.

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    I don't know how much rain water you get a year where you are. I get between 32 to 60 inches a year. I keep a large plastic trash cans under the eve of my house full. When i need water I go fill my five gallon bucket! I keep a fresh bucket in the house stored at room temps. That water has only 7 to 25 ppms and is stable and has no readable ph!. It is as clean as Reverse osmosis and the plants Love it! Tap water here is poison and when you use it on the plants it causes a lot of problems. The ppms in my tap is over 500 and the ph is 8.2! I used Ro for a long time but rain is better. Sometimes you have to supplement it depending on what kind of medium you use. The grows i like most is just add water grows. I all so love soil-less grows too! Water is very important!!!!

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    Thanks mate, that’s great information.

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    i think that 40% rh is going to mean the plants expirating hard and will be over feeding on anything and everything thats available to keep a sufficient supply of stuff it needs,ie its pigging out i think.

    plus theres a chance that the real RH could be a even lower,ive had a few of those chinese rh meters and theyve all over read in comparison to my humidifier guage.

    probably something else but the enviroment always comes first for me,once everything is dialled in right then its easier to figure out any other problems.spesh as just about every plant is slightly different in needs even if identical seeds etc.
    Last edited by ggotch; 14-11-18 at 10:08 PM.

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    What would you say is the ideal humidity is for flowering? I must admit I’ve got lazy with this at the minute.

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    personally i go with 50-55% but i also know the meters right,the worst thing is not being confident youre balancing everything in groom correctly using cheap meters etc,if ones out then everything becomes a guessing game.
    im also working that out against how the plants drinking etc but i might be off into narnia with that.

    even now i still use a checksheet to make sure i actually stick to my own rules and dont become too lazy in that department.plus memory is a massive problem for me now.

    i am veeery lazy sometimes,,and the plants pay for it then

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    Sorry for getting off track talking about me. If you want to save your plants and get a harvest just run water without anything in it. The plant can get enough nourishment from stored reserves in the leaves this late in the cycle. If you give them anything else the bear claw will probably get worse. Thats all I'm going to say, out of here

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    Thanks mate, gave them all just plain water last night, I'll see how she goes.

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