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Thread: NFT Crispy leaves - whats this?

  1. #1

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    Default NFT Crispy leaves - whats this?

    NFT GT901
    plant age: theyve been in the nft tank for 2 weeks exactly, i fucked up on this as its my first grow, didnt give the plants any sort of nutes after seedling stage, theyre in rockwool, just eventually went yellow and droopy after having nothing but water for 2 weeks in rockwool. after reasling my mistake i gave them rhizo and canna start nutes at about 0.4 EC they started grow really well and once the cubes were all rooted out i then put them into the nft tank. they are autos though, so ive lost 2 weeks on this grow, but have a learned a lot already and still learning more each day.
    Air temps (max min): 24c 28c lights 24/7
    Res temps (max min) 19c 21c
    humidity: 42% it was down at 30% for the last 2 weeks and im still working on getting this up for now, have another fogger coming
    lighting type (hps, led, cfl) 2 x 600 watt hps
    ph level:5.5
    EC (hydro and coco only)0.8
    Background EC.
    feed schedule and nutes (for hydro and coco): i change the nutes every 7 days right now, and top up once throughout the week so far usually with 10-20L of fresh nutes mixed at 5.5 PH and 0.8 EC

    Any help trying to diagnose this would be great, thanks. Any other info ive forgot to add let me know


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  2. #2
    Hobbit Guest

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    Looks like a bit of a calcium deficiency , foliar spray cal/mag @ 1ml/ltr see how you go mate. Be sure to get under the leaves and raise your light right up till they dry.

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    Jaz420 (12-10-17)

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    Theres a few more pics of each, also meant to say that I've checked the roots and they are growing nicely, nice and white, and no foul smells off them either

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  6. #5

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    Move your ph up to 5.7 n let it drift up to 6.2 then re set it
    Also tile spacers is good to sit the cubes on before placing in tank it gets good roots doing down into mat n won't drown them early on



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    Yes the pump is on 24/7. Have read many conflicting opinions about what to set your pump at in NFT, think that could be the issue?

    040 PPM from the tap, I'm guessing thats what background EC is?


    Quote Originally Posted by FACE View Post
    Move your ph up to 5.7 n let it drift up to 6.2 then re set it
    Also tile spacers is good to sit the cubes on before placing in tank it gets good roots doing down into mat n won't drown them early on
    Thanks, ill get the PH up a bit just now and get some tile spacers under the cubes as well, i have some downstairs. the roots are well on there way through the mat and in the water already though, would you think its too late for for the spacers?

    Quote Originally Posted by Hobbit View Post
    Looks like a bit of a calcium deficiency , foliar spray cal/mag @ 1ml/ltr see how you go mate. Be sure to get under the leaves and raise your light right up till they dry.
    I did order some of that and it came today, I did think it may have been that. But when comparing with other pictures it started to look like many different things, wanted a few second opinions as this is my first grow.
    Last edited by Jaz420; 10-10-17 at 10:25 PM.

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    Quote Originally Posted by Jaz420 View Post
    Yes the pump is on 24/7. Have read many conflicting opinions about what to set your pump at in NFT, think that could be the issue?

    040 PPM from the tap, I'm guessing thats what background EC is?
    24/7 is ok...Drop the canna start if your still using it and bump your pH up to 5.7 as FACE suggested...

    Regards BL

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    Quote Originally Posted by Bud Lightyear View Post
    24/7 is ok...Drop the canna start if your still using it and bump your pH up to 5.7 as FACE suggested...

    Regards BL
    Yea stopped the canna start once they went into the NFT tray. using canna vega a + b now. I'll up the PH to 5.7 and see how it goes, thanks for the help mate

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