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Thread: DWC plant sick

  1. #1

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    Default DWC plant sick

    Hi there people , have two dwc scrogged in 4x4 , one plant is healthy and fine , other is yellowing

    Ph is 5.8 on both and ppm is 1000 . Noticed on the one that’s yellowing the tips are nutrient burn I think. Using ionic bloom nutrient that is one bottle with cal mag added. Click image for larger version. 

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ID:	430983 why is the leaves going yellow ? It’s 2 weeks after switch of light to 12/12

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  3. #2

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    Do the roots look any different in the one that’s going yellow to the one that’s growing fine ?

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  5. #3

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    Surprisingly the roots are looking way better and whiter on the yellowing plant , the plant that’s healthy has roots really dark

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  7. #4

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    Ppm 1000 ? Depends on which meter you use to determine what EC that would be.
    Does your water have a ppm or is that measurement all nutrient?
    How much ml per litre of the ionic and cal/mag do you use per litre ?

    Click image for larger version. 

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    What light do you use ?
    What temps and humidity do you average ?
    Water temp reasonable ?

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  9. #5

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    Hanna ,ppm from tap is 10 as live in Scotland , put 0.5ml of cal mag to a litre which brings it up to 150-200 ppm . The ionic hydro on the bottle says 7ml to a litre , my bucket is 30 litre so it would be 210ml of ionic hydro bloom , I only put in 140ml . Sf4000 is light on 300w from wall . Temps are 26 ish and humidity is 45 to 50 . Water temp is 18-19 . Everything is perfect and like I said it’s perfect on the other plant , just don’t know why they are yellowing at the edges and spreading

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  11. #6

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    Well going from that info it would suggest to me overfert.

    As you are feeding max dose it’s unlikely to be underfeeding,if your ph is spot on and other variables are all good.
    10 ppm water ? with a total ppm of 1000 on the hanna scale. That reads an EC of 2 which is on the high side.
    She could be locked out.

    You say the bucket is 30 litres.Are you measuring the exact amount of water added.? So 20 litres of water to 140ml nutes ?
    Do you change the solution out often or just top up ?

    Same amount of air going to each pot ?

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