My LHBS was out of Crystal 60. The kid working suggested that I substitute a mixture of Crystal 20 and Crystal 40. That isn't right is it? Wouldn't a substitution for 60 need to be equal parts 40 and 80, or do they not average like that?
jayhoz said:My LHBS was out of Crystal 60. The kid working suggested that I substitute a mixture of Crystal 20 and Crystal 40. That isn't right is it? Wouldn't a substitution for 60 need to be equal parts 40 and 80, or do they not average like that?
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