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  1. #1
    Extreme Koi Member Rank = Rokusai Ianb's Avatar
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    Sodium Thiosulphate Pentahydrate

    Hi all, I meant to order Sodium Thiosulphate but ordered as per tittle, anyone used this, is it as safe as normal ST
    Thanks
    Ian



  2. #2
    I Think you'll find it is the normal form it's just the name is usually shortened when it is sold.

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  4. #3
    That's correct. The proper chemical name for the crystalline form is sodium thiosulphate pentahydrate (Na2S2O35H2O)

    Although, for simplicity, it's commonly sold just under the name
    sodium thiosulphate and, if the formula is quoted, it may either be the full form (Na2S2O35H2O) or the shortened form (Na2S2O3).

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    Extreme Koi Member Rank = Nisai Glimmer's Avatar
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    Quote Originally Posted by Ianb View Post
    Hi all, I meant to order Sodium Thiosulphate but ordered as per tittle, anyone used this, is it as safe as normal ST
    Thanks
    Ian
    This is the product / company I use to use , hope it help !
    Attached Images Attached Images

  7. #5
    Sorry if I didn't make it clear but you can use it whether its sold as sodium thiosulphate pentahydrate or just sodium thiosulphate.

    I calculated this chart for students on my on-line water quality course which is designed for an international student base so I calculated it for all three major measuring systems which allows them to use whichever units they prefer. You only need to use enough for the amount of top up water that is about to be added but sodium thiosulphate is virtually non toxic unless added in ridiculous quantities so you can be very generous in the amounts added.


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