Here's the improved recipe:
An Improved Do-it-Yourself Two-Part
Calcium and Alkalinity Supplement System
http://reefkeeping.com/issues/2006-02/rhf/index.php
the contents:
Introduction
Comparing the Two Primary Recipes
Recipe #1
Recipe #1, Part 1: The Calcium Part
Recipe #1, Part 2: The Alkalinity Part
Recipe #1, Part 3: The Magnesium Portion
Recipe #1, Part 3A
Recipe #1, Part 3B
Recipe #2
Recipe #2, Part 1: The Calcium Part
Recipe #2, Part 2: The Alkalinity Part
Recipe #2, Part 3: The Magnesium Portion
Recipe #2, Part 3A
Recipe #2, Part 3B
Dosing Instructions
Substitutes for Dowflake Calcium Chloride
Substitutes for Dead Sea Works Magnesium Chloride Hexahydrate
Where to Buy the Materials
Calculation Rationale for the Recipes
The Design of the Calcium and Alkalinity Parts
Residual Ions from the Calcium and Alkalinity Parts
Residue Remaining from Recipe #1 when using Recipe #1, Part 3A
Residue Remaining from Recipe #1 when using Recipe #1, Part 3B
Summary
Reference Links