Randy's Magnesium Recipes 1&2 Question - Dry Dosing?

[tbrown]

Randy or anyone: I recently mixed up some Randy's Part A and B Magnesium using Magnesium Sulfate and Magnesium Chloride. I'm limited on storage space and wanted to make sure my math is correct as it's been a while:

8 cups to 1 gallon means 2 Tbs (1/8 cup) to 2 oz (1/4 cup) water for the same strength.

Dosing that 3 oz solution would raise the magnesium in a 10 gallon tank 100 ppm.

SO: dosing 2 Tbs of dry Recipe 1 and 2 (Recipe 3) per 10 gallons of total system gallons of water raises my Magnesium by 100, right?

My system volume minus rocks and sand and equipment is approximately 65 gallons. So dosing 12 Tbs should raise my magnesium by approximately 100 ppm.

I'm not planning on dosing this all in one shot, just wanted to make sure my math is correct.

 

[Randy Holmes-Farley]

Randy or anyone: I recently mixed up some Randy's Part A and B Magnesium using Magnesium Sulfate and Magnesium Chloride. I'm limited on storage space and wanted to make sure my math is correct as it's been a while:

8 cups to 1 gallon means 2 Tbs (1/8 cup) to 2 oz (1/4 cup) water for the same strength.

Dosing that 3 oz solution would raise the magnesium in a 10 gallon tank 100 ppm.

SO: dosing 2 Tbs of dry Recipe 1 and 2 (Recipe 3) per 10 gallons of total system gallons of water raises my Magnesium by 100, right?

My system volume minus rocks and sand and equipment is approximately 65 gallons. So dosing 12 Tbs should raise my magnesium by approximately 100 ppm.

I'm not planning on dosing this all in one shot, just wanted to make sure my math is correct.

I didn’t check the math, but you can use a calculator for dry dosing either of the two ingredients here:

Reef Chemistry Calculator

reef.diesyst.com

If this is a dry mix from BRS for use with a two part, you can average them and be close enough.

 

[UMALUM]

Please excuse the hi jack but for the sake of not start8ng a new thread @Randy Holmes-Farley would you be so kind as to remind me AGAIN the proper mixing directions and dosage for tm c in conjunction with your 2 part? My apologies I forgot to write it down and this topic for reasons unknown to myself is all over the map when trying to research.

 

[tbrown]

I didn’t check the math, but you can use a calculator for dry dosing either of the two ingredients here:

Reef Chemistry Calculator

reef.diesyst.com

If this is a dry mix from BRS for use with a two part, you can average them and be close enough.

It's not. I bought the two different magnesium types and mixed them in the ratio you have just without mixing with a gallon of water.

 

[Randy Holmes-Farley]

Please excuse the hi jack but for the sake of not start8ng a new thread @Randy Holmes-Farley would you be so kind as to remind me AGAIN the proper mixing directions and dosage for tm c in conjunction with your 2 part? My apologies I forgot to write it down and this topic for reasons unknown to myself is all over the map when trying to research.

2 volumes of Balling Part C for each one volume of calcium or alk part.

That recipe neither supplements nor depletes magnesium. If you want to supplement magnesium (which I recommend) then I’d add about 5 mL of my normal diy magnesium mix per 100 mL of the alk or calcium part used.

 

[Randy Holmes-Farley]

It's not. I bought the two different magnesium types and mixed them in the ratio you have just without mixing with a gallon of water.

Ok, then you can use the calculator for the dry components averages, or the liquid recipe scaled to whatever volume you dissolve them in that is different than 1 gallon.

 

[Miami Reef]

Hello @Randy Holmes-Farley

This is your magnesium recipe:

Dissolve Epsom salts (magnesium sulfate heptahydrate (3 cups) and magnesium chloride hexahydrate (5 cups) in enough purified freshwater to make 1 gallon total volume.

Is it interchangeable? For example, Can I use 7 cups of Magnesium chloride and 1 cup magnesium sulfate? As long as the total cups of magnesium = 8.

Does it work like that?

 

[Randy Holmes-Farley]

Hello @Randy Holmes-Farley

This is your magnesium recipe:



Is it interchangeable? For example, Can I use 7 cups of Magnesium chloride and 1 cup magnesium sulfate? As long as the total cups of magnesium = 8.

Does it work like that?

For magnesium concentration that is mostly ok, for chloride sulfate balance, it is not ok.

 

[tbrown]

For magnesium concentration that is mostly ok, for chloride sulfate balance, it is not ok.

I followed the 7 1/4 cup to 3/4 cup recipe from the article:

https://reefkeeping.com/issues/2006-07/rhf/index.php#13

 

[Randy Holmes-Farley]

I followed the 7 1/4 cup to 3/4 cup recipe from the article:

https://reefkeeping.com/issues/2006-07/rhf/index.php#13

That is appropriate for stand alone magnesium supplementing, not associated with using a diy two part.

 

[tbrown]

That is appropriate for stand alone magnesium supplementing, not associated with using a diy two part.

Yep, just the magnesium.