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Thread: EC, ph & water levels. What they tell you and how to react.

  1. #31

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    None at all even more so in RDWC as the roots are in contact with their food. Keep your ec on the lower side rather than too high.

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  3. #32

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    read this on the first couple of lines in the post "This does not apply to waterfall effect or flooming for introducing Dissolved Oxygen" just read it agian and it must have been referring to acid rain effect ??

    Cheers H - copied into my noob book

    Brilliant post cheer ears

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  5. #33

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    It was all about how ph of water becomes acidic when pumping air into a system through airstones.

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  7. #34

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    Hope you don't mind Woody, but I found the table a little hard to read so have reformatted it.

    Water level EC PH Solution
    Static Static Static Plant not feeding/drinking, change EC, check meters. Usually, lowering the EC a little should get the plant feeding again
    Static Static Rising Ph buffers probably raising ph. This is usual. Having a static water level is not though, so again, a slight reduction in EC or a res change should resolve this.
    Static Static Falling Usual cause of this is when media has been rinsed at a lower ph than you require.
    The other possibility is that too much CO2 has been pumped into the water. See Note 1.
    Change your res and look at the volume of air pumped plus look at your air source.
    Static Rising Static Plant is leeching nutrition, raise EC. Note 2
    Static Rising Rising Plant leeching nutrition, Raise EC. An unusual state. The rising ph is probably caused by what nutrient leeching back.
    If these are alkaline, it will lead to the rise in ph. Could also be ph buffers.
    Static Rising Falling As above but be aware of the acid rain effect mentioned in note 1. Res change, plus increase in EC.
    Static Falling Static Plant eating but not drinking. Not ideal. Lower EC or res change
    Static Falling Rising As above but rising ph is a better sign. Lower EC slightly or res change.
    Static Falling Falling Falling ph along with falling EC but no drop in water level suggests a res change. Could also be an acid rain effect as per note 1. Depending on other symptoms, lowering EC after res change.
    Falling Static Static Perfect conditions. EC and ph are at the correct level.
    Falling Static Rising Normal state most people encounter. Nothing to worry about, carry on doing what you are doing unless other plant symptoms.
    Falling Static Falling Res change plus a change of EC. Lower EC if over 1.4, raise EC if lower than 1.0
    Falling Rising Static Plant is drinking more than eating, lower EC.
    Falling Rising Rising Plant is drinking more than eating, lower EC
    Falling Rising Falling Plant is drinking more than eating, lower EC. Also, res change due to possible acid rain problem.
    Falling Falling Static Hungry plant, raise EC. Very good situation to be in. Nute buffers are working and plant is taking a balance of nutrients.
    Falling Falling Rising Almost as above, usually considered almost perfect, raise EC slightly.
    Falling Falling Falling Res change. Potential acid rain issue but plant is still eating & drinking. Raise EC on new res

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  9. #35

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    just what i was looking for brilliant info

    and a happy outcome

    cheers

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  11. #36

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    Great thread. Thank you!

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  13. #37

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    Hey guys my water level static/ec rising/pH rising. Leaves showing nute burn. Should I still raise EC? Base 0.4 ec was set at 0.6. Day 39 autos, I have a diary running, cheers for any replies.
    Last edited by newbie89; 16-03-15 at 01:23 PM.

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  15. #38

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    how often do i need to check the EC/PH levels?

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  17. #39

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    Quote Originally Posted by NatureVal View Post
    how often do i need to check the EC/PH levels?
    Every day chap!!!
    I did for a peace of mind n that

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  19. #40

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    Quote Originally Posted by NatureVal View Post
    how often do i need to check the EC/PH levels?
    I check everyday till I knew how things were going. After that I only check every few days. Once you know your set up you don't really have to check every day in my opinion.
    "If science can't be questioned, It's not science anymore"

    ~Aaron Rogers

    "This is not an economic turndown, it is a takedown"

    ~ Catherin Austin Fitts

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