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Local water quality

This is a discussion on Local water quality within the General Orchid Culture forums, part of the Orchid Culture category; I just went online to get a print out of our local water supply and ...

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  1. #1
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    Default Local water quality

    I just went online to get a print out of our local water supply and was shocked when I seen that our average pH is 9.8 to 10.0! Is this possible or is this a typo?

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    wow, that doesn't seem normal...

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    Doesn't sound right to me, either! Please keep us updated!

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    I went to the pet store and purchased a 5 in 1 test kit and just in case, a small bottle of their pH down, (sulfuric acid, % unknown). First test, and sure enough, pH was off the chart. The chart only goes to 9.0. After adding a few drops of pH down at a time and retesting I got it close to 6.5 with 14 drops. This would explain a lot! One other situation I'll have to look into: Iron-None detected

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    Alkaline pH is not good for your orchids even our health , with the pH 9 to 10 it's can cause skin irritation and may kill orchids without a mercy.Do something before it's too late.

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    Quote Originally Posted by zainal abidin View Post
    Alkaline pH is not good for your orchids even our health , with the pH 9 to 10 it's can cause skin irritation and may kill orchids without a mercy.Do something before it's too late.
    Oh, I'm definitely going to do something. Looking into it as we speak. General Hydroponics has a powder form of pH down. Just have to figure out how far it will go and how much I'll need to order.

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    It would not be unheard of for a pH of 9-10 in some areas. You might also consider a reverse osmosis system. Did you check total dissolved solids-that might be a problem with your water also?

    Susan

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    Quote Originally Posted by orchidlady View Post
    It would not be unheard of for a pH of 9-10 in some areas. You might also consider a reverse osmosis system. Did you check total dissolved solids-that might be a problem with your water also?

    Susan
    Nothing on the data sheet about total dissolved solids. Total hardness, yes. Not sure if it's the same thing. Total hardness, (as CaCo3): 99-108 mg/L.

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    Mitch, total hardness is different from total dissolved solids (TDS) salts like Sodium and Potassium contribute to TDS but not to hardness. I suspect your water might have high conc. of Na, as it is used to reduce hardness.

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    Thank you Amey. Looks like the only real cure is RO. I'm looking at a system that produces 60 gpd for about $180.00. Maybe I'll start a new thread for suggestions.

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