Posted By Trevor on February 15, 2002 at 14:04:19:

In Reply to: Re: reduced sulphate toxicity with increasing water hardness posted by cherry on February 15, 2002 at 12:05:18:

Like I said in the original post, it is not ion pairing. I modeled the system and less than .1% of sulphate forms an ion pair with sulphate. Also, just to make sure I add calcium as CaSO4 so that should cancel that out anyway. Any other ideas?

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