Improved DIY Two Part Recipe

Lab grade isn 't really a grade per se. Lots of different grades are used in labs for different purposes. The highest grades will be way to expensive for anyone to use in a reef.

Yes, a really pure calcium chloride without any potassium will allow potassium to drop unless you add it.
 
From the upcoming article:

"The 7 most abundant ions in seawater, in decreasing order of concentration, are chloride, sodium, sulfate, magnesium, calcium, potassium, and bicarbonate. Using this new recipe will keep all of these ions in an appropriate ratio (detailed below). "
 
Okay, new question :)

Can you dilute the parts one and two mixes with extra water but with the same amount of chemicals and still maintain balance? I asked because I'd like to setup a drip for parts one and two, but even a drip goes pretty fast and I don't want to over dose. So, I though that if I needed about a cup of solution per week of each part I could dilute the cup into a gallon of RO water and let the one gallons drip over the course of a week.
 
Randy, going with your ratio for non-kalkwasser users, you said 9.7:1 ratio should be used. This means The recipe for 1 gallon of solution otherwise is 5 cups to 3 cups, so a total of 8 cups put into 1 gallon of water. With the new ratio, this would be:

90.7% (7 1/4 cup) magneisum chloride hexahydrate
9.3% (3/4 cup) Epsom salts

added to enough RODI water to make a total solution of 1 gallon.

1) Is this correct?
2) What would be the PPM of magnesium?
3) How much would 1 cup solution added to 100 gallons increase magnesium by? ( I think with an answer on number 2 I could figure this out) :)

Thanks :)

Mark
 
Great! I used the calculator, but just so I know how to do it...

250 gallons in system = 946 liters

Current magnesium = 1130 ppm
Desired = 1330 ppm

So, I need to increase by 200 ppm, or 200 mg / L.

946 liters x 200 mg / L = 189,200 mg of magnesium I need to add.

Your solution is 47,000 ppm, or mg / L.

189,000 mg / 47,000 mg/L = 4.02 L

4.02 L * 0.26 gallons/L = 1.06 gallons of solution

Same answer I got from the link using the Randy's Magnesium recipe dropdown :)
 
Also, for those wanting to know how long this will last you...

The magnesium chloride hexahydrate in the 55 pound bags I bought it in weigh 0.445 pounds per cup.

So a 55 pound bag of magensium chloride hexahydrate mixed in the above ratio with epsom salts yields about 800,000 ppm. You can use figure from there depending on your magnesium usage how long it will last you :)
 
Same answer I got from the link using the Randy's Magnesium recipe dropdown

:thumbsup:

I'm glad it gave the right answer. :D

Happy Reefing. :)
 
Are you releasing an updated version this month? Seem to remember reading that somewhere (maybe earlier in the thread).
 
Ixthys: Randy shows his new version above.

Randy,

I searched and found MgCl hex. but the cheapest I could find was about $35/kg.

http://www.advance-scientific.net/Properties.asp?code=MA111

Seachems product at $10 per kg translates into about $15/kg cost of Mgcl fraction assuming they are using the same ratio of Mag cloride to epsom salts you are suggesting. (this number assumes epsom salts cost contribution to their product is negligable)

Am I missing something? Seachem apparently gets a pretty good deal on Mgcl hex. or they use a lot less in the mix.
 
<a href=showthread.php?s=&postid=6632403#post6632403 target=_blank>Originally posted</a> by Reef55
Also, for those wanting to know how long this will last you...

The magnesium chloride hexahydrate in the 55 pound bags I bought it in weigh 0.445 pounds per cup.

So a 55 pound bag of magensium chloride hexahydrate mixed in the above ratio with epsom salts yields about 800,000 ppm. You can use figure from there depending on your magnesium usage how long it will last you :)
Click to expand...

I should have read this before:

Where did you find your 55lb bag?:o
 
Re: Improved DIY Two Part Recipe

<a href=showthread.php?s=&postid=6421260#post6421260 target=_blank>Originally posted</a> by Randy Holmes-Farley
......I'll be putting together a whole article on it for February Reefkeeping.....

I'll also have a recipe there for part Epsom salts and part ESV or Kent magnesium supplements for those who cannot get the mag chloride but who want ionic balance.

Happy Reefing. :)
Click to expand...

This is what I'm talking about...
 
It sounds like your diy mix is similar to Seachem's Reef advantage Magnesium.

No it is not, That product is essentially Epsom salts (magnesium sulfate) and sodium chloride, and is not ionically balanced. ESV and Kent sell products that are likely magnesium chloride and magnesium sulfate, and are ionically balanced.
 
I'll also have a recipe there for part Epsom salts and part ESV or Kent magnesium supplements for those who cannot get the mag chloride but who want ionic balance.

That actual part I didn't do. Sorry. I don't have a recipe that includes Epsom salts and those liquid products. If you use about 3 parts of my Part 3 and 5 parts of those additives (based on magnesium content), it should be pretty good. :)
 
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