As the wordy title says the advanced water chemistry calculator is currently wildly inaccurate with its acid addition suggestions, a few weeks ago this nearly caused me to lose hours of work on a pilot batch had I not thought the numbers seemed off and done a mini-mash first to check. The calculator had me add around twice the acid actually required. Guys, please can you sort this out? I'm paying for functionality here that is at best unhelpful and at worst will ruin people's batches. If you want to cross-reference then I suggest you use the free BrunWater calculator, which is extremely accurate.