Sodium Ascorbate Method
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Try Koi Toolkit PRO →Sodium Ascorbate (Vitamin C) is becoming a popular "natural" alternative to traditional chemical dechlorinators. Unlike some treatments that can slightly lower oxygen levels, Vitamin C is pH-neutral and safe for all aquatic life. This Vitamin C dechlorinator calculator provides the exact dosage of Sodium Ascorbate required to neutralise chlorine in your tap water.
Many hobbyists prefer using a sodium ascorbate pond dechlorinator because it is effectively a health supplement for the fish while it works. It neutralises chlorine on a 2.8 to 1 ratio. It is particularly useful for those who want a safer, non-toxic environment for sensitive high-quality koi or for those who perform very frequent, small water changes.
When using Vitamin C to neutralise chlorine in a pond, ensure you are using pure Sodium Ascorbate powder rather than crushed tablets, which often contain binders and fillers. As with all treatments, ensure your pond is well-aerated during the process. Retest your water regularly to ensure your dosing remains accurate for your local water supply.