2 Part Magnesium Mix Aquarium Supplement

2 Part Magnesium Mix
Click on image to zoom
View full size image

More Views

  • 2 Part Magnesium Mix

2 Part Magnesium Mix Aquarium Supplement

97% Recommend this to a friend (33 of 34)

SKU: 000316
In Stock: 73
Please wait...
Ships tomorrow

365 Day Returns

What's This?

Preferred Reefers
Earn Up To 5% Back

Quick Overview

Why does BRS recommend this?

The Pre-Portioned 2 Part Magnesium Mix is one of the easiest ways to supplement magnesium for 2 part dosing.  The mixing of 5 cups Magnesium Chloride to 3 cups Magnesium Sulfate is already done for you keeping your measuring cups in the kitchen and virtually no mess.

Simply just cut the corner of the bag, and pour into a 1 gallon container.  Then top the container off with RODI water and let dissolve for 24 hours prior to use.

Tip: Maintaining proper magnesium levels will help prevent calcium and alkalinity from precipitating which makes maintaining these levels easier as well.


Full Details

One bag mixes with water to create a gallon of solution.

This mix of magnesium chloride and sulfate is designed to be used in conjunction with the two part dosing system as part of standard parameter maintenance.

Maintaining proper magnesium levels will help prevent calcium and alkalinity from precipitating which makes maintaining these levels easier as well.


Items 1 to 12 of 34 total

  1. 1
  2. /
  3. 2
  4. /
  5. 3
  • good results, easy to use By Bruce on 7/2/2017

    I used to by the individual components but they would get old and clump and then be hard to use and measure. This is easy and doesn't hurt the budget. I use BRS 2 part on a 90 gal packed with sps and this gallon mix will last for months so it doesn't make sense to buy bigger amounts anyway...get great results too!
  • Switched from ESV B-ionic By Duromega on 3/14/2017

    I was a little bit worry about switching from ESV I was worried about concentration of the product, actually it works and mixes pretty well

    8.99 vs 28.99 at my LFS made me switch.
  • Easy to mix, Corals look good By Kevin on 3/3/2017

    I recently bought a magnesium test kit and found out my magnesium was low. So I purchased this 2 part magnesium product. It came quickly, it was easy to mix, and my corals seem to like it.
  • Great By Les on 1/18/2017

    Does what it should.
  • Love it!!! By Rick on 10/23/2016

    Very easy and fast! Mixed well and no measuring! Does not have particles at the bottom of the jug after mixing. Great product!
  • Make sure to use a funnel By Justin on 10/21/2016

    I highly recommend that you use a funnel. I had a 1 gallon jug that took me ~10 minutes to get all of this magnesium salts into with my flimsy paper funnel and a pen to push it through.

    I'm sure that if I had a nice plastic funnel it would have been much easier to get the bag of mix into the jug.

    I had no problems getting all of it to dissolve; it dissolved completely within minutes but I did leave it overnight like the instructions said to be safe.

    It worked well, raising my mg levels the amount I expected it to.
  • Very Satisfied! By Shane on 9/12/2016

    Reasonably priced, mixes very well, and does what its supposed to do. What more do you want. Switching to this product from now on. Thanks BRS for yet another great product!
  • Good Product - Easy to Prepare By Lawrence on 9/7/2016

    Unless you are having to dose several tanks, this is a great product. It is easy to use, no premixing and performs as advertised. It is cheap and quick to prepare. Highly recommend unless you need to buy the magnesium supplements 5 gallon buckets. Highly recommend.
  • Great product By Michael on 9/2/2016

    Very easy to use and dissolves cleanly!
  • Simple By Scott S on 8/23/2016

    If you are dosing and use magnesium then this is the way to go. It is already measured out and ready to go. It just works, plain and simple.
  • best two part By Dave on 4/15/2016

    best two part, never trusted mag chloride driveway melt, this is a good deal, I like the pre-mixed 1 gallon pack
  • Great product By Daniel on 3/10/2016

    I love the two part Brs offers.. Living on a budget these two parts make it reasonable to have a great system at great prices.. You can't go wrong! Thank you brs!


Ask a question

Product Questions

So I have a couple of these and they are leaking some sort of clear fluid. The specific gravity of the liquid is something akin to baby oil or the like. It is odorless and colorless (dunno if it is tasteless am not going to lick the floor to find out). Any ideas what the mystery fluid is and will it effect the final mixture since whatever it is, isn't going to be in the final mix?
Question by: David Carrington on Feb 1, 2016 6:29:00 PM
Hey there!
If the powder Magnesium is having liquid coming out it is related to the magnesium pulling humidity out of the air and resorting to a liquid state, this will not affect the performance of the powder and the remaining powder can still be used. If the solution is mixed and the mr. chili jug is leaking this would be an issue we can help out with on the container. Let us know via email or our support line and we will be more than willing to help!
Answer by: Connor (Admin) on Feb 19, 2016 9:57:00 AM
Once mixed and stored air tight-what's the shelf life?

What's the shelf life of the sealed mix?

Found a gallon container in storage and some misc mix sealed up from a couple years ago so just wanting to confirm.

Question by: William on Nov 16, 2013 10:47:00 AM
Hey William,
Short of something contaminating it, it will basically last until the end of time :-) The magnesium(s) in particular are very hygroscopic though so don't be surprised if it has turned hard (or slushy depending on which product you have). Thats nothing to worry about though.
Answer by: Bulk Reef Supply on Nov 16, 2013 10:47:00 AM