By "old" I think you mean pre LCD sold by Caswell. This was I believe a 1:2 battery acid / water mix. If you're anodizing at 12 ASF, it would be a better choice than the LCD ratio. Both mixtures mentioned above are by volume.
BTW, a 1:1 mixture by volume is very close to the traditional 165 grams per liter by weight electrolyte. When you consider this, its evident how much safer and more pleasant to be around the LCD electrolyte is.
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