DYI Two Part

[hadams356]

Randy
Getting ready to mix up your two part recipe and recieved Anhydrous Sodium Sulfate.
By using anhydrous sodium sulfate, should it be reduced by 20% for your true two part?

Thank you in advance

 

[Randy Holmes-Farley Verified Community Expert]

The recipe developed by Jim Welsh that uses sodium sulfate assumes, I beleive, that the sodium sulfate is anhydrous, so you need make no corrections:

Jim's recipe (with some text added by me):

Part 1 - The Calcium and Magnesium Part
Dissolve 500 g of calcium chloride dihydrate plus 261.2 g of magnesium chloride hexahydrate in enough water to make a total volume of one gallon.

Part 2 - The Alkalinity and Sulfate Part
Dissolve 374.7 g of sodium carbonate (594 g of baking soda that has been baked; = 3.535 moles of sodium carbonate) plus 68.7 g of sodium sulfate in enough water to make a total volume of one gallon.

This recipe is the same strength as Randy's Recipe #1 (e.g., BRS). To make these two parts with the same strength as B-Ionic, then multiply the amounts of the salts by 1.5 (but note dissolving the carbonate can become challenging).

https://www.reef2reef.com/threads/new-diy-two-part-recipes-with-higher-ph-boost.344500/