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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.

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    What's the crack chaps?
    Let's get it on!

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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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  5. #3

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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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  9. #5

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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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  11. #6

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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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  13. #7

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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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  17. #9

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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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  19. #10

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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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