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Thread: Salt meters

  1. #1
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Salt meters

    Been looking at salt meters and cant get my head round them.
    I see some come precalibrated to 3000 ppm or 0. 3% so that can only be used at 0. 3% salt ?
    If you want 0.6% or 0.9% salt does it have to be recalibrated ?
    Really cant understand it ( bit thick )
    I am old school ie 1/2 oz per gal.

    Can anyone recommend one not too expensive.


    John

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  3. #2
    Senior Member Rank = Rokusai Simon Fish's Avatar
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    Have another look at your post from April.
    I put up various readings for the pen I have that does what I wanted from it.

    https://www.koiforum.uk/koi-carp-cha...ght=Salt+meter

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    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Knew I had done one before but couldn't find it.
    John

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  7. #4
    Quote Originally Posted by john1 View Post
    Knew I had done one before but couldn't find it.
    I use this one. Starts at .3% I tested it's accuracy in 10l of water I salted to .6% and it was spot on.

    Sent from my BBF100-1 using Tapatalk
    Built not bought!

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  9. #5
    I use a TDS meter I bought off flea bay.

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    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Quote Originally Posted by dave_vr6 View Post
    I use this one. Starts at .3% I tested it's accuracy in 10l of water I salted to .6% and it was spot on.

    Sent from my BBF100-1 using Tapatalk

    I have seen them Dave but didn't know how good they are,I only want one for the grow on as when I salt and water change I dont know the strength left to top up with salt.
    So would this one be ok?
    John

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    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Quote Originally Posted by trapper View Post
    I use a TDS meter I bought off flea bay.
    Have you a link for yours Trap?
    John

  14. #8
    Quote Originally Posted by john1 View Post
    I have seen them Dave but didn't know how good they are,I only want one for the grow on as when I salt and water change I dont know the strength left to top up with salt.
    So would this one be ok?
    It doesn't read before .3 it works fine for me I recently salted my pond. Worked out to .25. Obviously it didn't show at .3 which suits me.

    Sent from my BBF100-1 using Tapatalk
    Built not bought!

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  16. #9
    Quote Originally Posted by john1 View Post
    Have you a link for yours Trap?
    Sorry John, I don't, it was like 20 bucks as I didn't want to get the cheapest ones..

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    Extreme Koi Member Rank = Adult Champion bowsaw's Avatar
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    Quote Originally Posted by trapper View Post
    I use a TDS meter I bought off flea bay.
    does it also provide conductivity?
    if its only showing TDS how can you tell its from sodium and not any number of other things in the water?

    I use that one most of the time

    the slow pond build thread

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    Senior Member Rank = Rokusai JimJones's Avatar
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    Quote Originally Posted by dave_vr6 View Post
    I use this one. Starts at .3% I tested it's accuracy in 10l of water I salted to .6% and it was spot on.

    Sent from my BBF100-1 using Tapatalk


    Tried one of those . pretty dodgy couldnt not get it to work. at one point i knew i more salt than 0.3 percent in my old pond but it wouldnt even register on the meter

    there a better one on amazon like the american one earlier in this post that comes with a Ph for around 15 quid

    i got one of those and it was good

    didnt last long despite rinsing it after use

    Jim

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  22. #12
    Quote Originally Posted by JimJones View Post
    Tried one of those . pretty dodgy couldnt not get it to work. at one point i knew i more salt than 0.3 percent in my old pond but it wouldnt even register on the meter

    there a better one on amazon like the american one earlier in this post that comes with a Ph for around 15 quid

    i got one of those and it was good

    didnt last long despite rinsing it after use

    Jim
    I tested mine at 0.6 in 10l of water that I knew was .6 as I added the salt and did the math myself. It read just fine.

    They are all cheap crap from China at that end of the price range and at the end of the day and you get what you pay for. Koi medic and Hanna various other makes starting at £80 upwards are all readily available. Extech EC600 for £400. It is what it is mate how often you gonna use it?

    I was salting my pond as a one off. Tested accuracy before use and salted. Takes 10 mins to test prior to every use and you have to dissolve the salt in a separate tub anyway prior to adding to pond.



    Sent from my BBF100-1 using Tapatalk
    Built not bought!

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  24. #13
    Senior Member Rank = Rokusai JimJones's Avatar
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    agree mate. Youre not gonna set the world on fire with something for 9 quid from ebay.
    Bet mine was a duff one glad yours worked.

    Wasnt all sadness at mine as like i said got one for 15 quid ish . A TDS one off Amazon and it came with a Ph meter too.

    that one worked well for a while no complaints there

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  26. #14
    Extreme Koi Member Rank = Yonsai LouiseR's Avatar
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    Can recommend the Koi Medic Salt Meter by Trans Instruments. Not cheap at £76-£80, but it’s so easy to use and very reliable - I’ve just replaced one that I’ve had for 9 years, never needed to recalibrate it. Operating range is 0% - 1%. Worth the money.

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  28. #15
    Quote Originally Posted by bowsaw View Post
    does it also provide conductivity?
    if its only showing TDS how can you tell its from sodium and not any number of other things in the water?

    I use that one most of the time

    I test before adding any salt, then use a salt calculator and salt to the desired amount and after it's been dissolved in the water stream I take another reading to make sure it's where I want it to be, minus the first reading will be the salt reading..

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  30. #16
    Senior Member Rank = Rokusai JimJones's Avatar
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    tested it by using pond water with no salt in .

    the added a fixed amount that I knew would give me a value I would be expexting.

    added salt to the pond . waited a while then measure TDS

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  32. #17
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Quote Originally Posted by JimJones View Post
    tested it by using pond water with no salt in .

    the added a fixed amount that I knew would give me a value I would be expexting.

    added salt to the pond . waited a while then measure TDS
    Makes sence that Jim.
    John

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