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Thread: HELP second grow need some advice asap

  1. #1

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    Default HELP second grow need some advice asap

    Hi guys anyone have at guess at my issue need to go grow shop before work this morning if I need anything I was thinking maybe cal mag?
    Environment is spot on apart from ro being a little on low side but there is humidifier running now, I mix ro and tap water I'm wondering if I added to much ro and there is a calcium deficiency?

    Thanks

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  3. #2

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    Default

    Looks like either calcium or PH to me.

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  5. #3

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    Default

    have a guess

    thats all it will be givin the info you provided lol
    why you mixing water, what up with good ole tap water? you in DWC?
    wots ph been like you want it swingin from 5.6 to 6.2 then reset it or have it stable around 5.8 5.9

    does look like cal issue.

    whats feed schedule like? and final EC? whats EC of your tap water? hows res temps?

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  7. #4

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    I know sorry it was a quick post so I could shoot of to grow shop b4 work.

    In Hydro rdwc
    Ph stable 5.8
    Mixing ro because my tap water 1.0 ec hardest water in the country ec was 0.3 after mix I used to do it about 0.5 but I'm running less pots than last time and this was my first fill so I'll use a bit less ro next time been and brought some cal mag anyway.
    Ec is 0.8 (bc of 0.3 inc)
    Temps are 24-26 lights on 22c off
    Lights 2x 315w cdm maxibright with 930 Phillips bulbs
    Humidity is around 40% ( I'm working on it)
    Water temp steady 18c it's got a chiller and heater on
    Extraction 6 inch in 8 inch out on a hybrid controller

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  9. #5

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    Default

    Looks more like magnesium deficiency to me, calcium deficiency starts at edges and moves in.

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