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    Thread: Sodium Thiosulfate Pentahydrate??

    1. #1
      KoiFan84 is offline Senior Member
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      Sodium Thiosulfate Pentahydrate??

      I want to use Sodium Thiosulfate to dechlorinate. On Amazon Iím only seeing it with Pentahydrate as the 3rd word, and it says pools. Will the S T Pentahydrate be safe for koi in the pond? Thanks.

    2. #2
      Nuspeed007 is offline Senior Member
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      Yes it is, the pentahydrate denotes 5 water molecules (5 H2O) attach to Na2S2O3.
      https://en.wikipedia.org/wiki/Sodium_thiosulfate

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