BRS Pharma Magnesium Supplement Magnesium is easily one of the most overlooked elements in a saltwater aquarium and is an essential part of being able to hold calcium and alkalinity at the levels they need to be at for coral growth.


MAGNESIUM DOSING TIPS


Pharma Magnesium Chloride and Magnesium Sulfate Mixing Instructions

General Adjustments

Makes 1-Gallon of Liquid Magnesium Solution for General Adjustments.

For special one-time changes that require larger amounts of magnesium solution to be dosed than you would normally with your daily 2-part dosing. The general adjustment recipe should be used with kalkwasser or calcium reactor dosing as well.

  1. Using a clean 1-gallon jug or container, fill it 1/2 full of RO/DI water.
  2. Add 7 1/4 household measuring cups of BRS Pharma Magnesium Chloride and 1/2 cups of BRS Pharma Magnesium Sulfate into the container.
  3. Screw on the cap to the jug and shake it for about 10 seconds to start the dissolving process.
  4. Remove the cap and fill the container the rest of the way with RO/DI water.
  5. Replace the cap and give the container a few more shakes and let it sit until the salts are fully dissolved which should only take a couple of hours.

2-Part Dosing

Makes 1-Gallon of Liquid Magnesium Solution for Daily Adjustments.

For daily magnesium additives or even weekly

  1. Using a clean 1-gallon jug or container, fill it 1/2 full of RO/DI water.
  2. Add 5 1/4 household measuring cups of BRS Pharma Magnesium Chloride and 2 cups of BRS Pharma Magnesium Sulfate into the container.
  3. Screw on the cap to the jug and shake it for about 10 seconds to start the dissolving process.
  4. Remove the cap and fill the container the rest of the way with RO/DI water.
  5. Replace the cap and give the container a few more shakes and let it sit until the salts are fully dissolved which should only take a couple of hours.

Pharma Magnesium Liquid Solution Dosing Instructions

Dosing any solution requires a little bit of math to make sure that you do not overdose your aquarium, however, the math is made pretty simply with the BRS Reef Calculator. When adding any magnesium solution it is very important to dose it very slowly into a high flow area of the tank and monitor the salinity of your aquarium during and after dosing.


General Adjustment Dosing

  1. Create a 1-gallon solution by following the Mixing Instructions above and then test your aquarium's current magnesium level with your favorite test kit.
  2. Using the BRS Reef Calculator Choose Magnesium for the element, Liquid Magnesium Mix for the product, and the type of New Pharma Pouch.
  3. Input your total system water volume, which includes your display and sump, minus any displacement from your rock or other equipment, and then click on Calculate. If you are not sure, using your display tank's total water volume is a safe bet.
  4. The result will be how much of the BRS 1-gallon Liquid Magnesium Mix solution that should be required to increase your aquarium's magnesium level to your desired amount.

Daily Dosing

  1. Start by following the General Adjustments instructions above to adjust your aquarium's magnesium, along with calcium and alkalinity to your desired levels for your dosing regime starting point.
  2. Wait 5 days and retest your aquarium's magnesium level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much magnesium will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as magnesium levels may fluctuate throughout the day with your aquarium's pH.
  3. Go to the BRS Reef Calculator and input your new desired level and your new current level along with your total system water volume. Input your values into the BRS Reef Calculator making sure to use the BRS Liquid Magnesium Mix (New Pharma Pouch). The amount calculated will be the total amount of solution needed for a 5-day span of time. To know your daily dose just divide that number by 5 (see example below).
  4. Monitor and adjust the daily dose as necessary. If your magnesium levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your magnesium levels are dropping slowly we suggest raising your daily dose by 10% per day.

Example for 100-Gallon Aquarium

Magnesium Level Day 1 @ 8pm - 1300 ppm (desired level)

Magnesium Level Day 5 @ 8pm - 1270 ppm (current level)

5-Day Magnesium Requirement - 241.9 ml (provided by BRS Reef Calculator)

Daily Magnesium Requirement - 48.4 mL (241.9 mL / 5 days)

 

REEF CALCULATOR

 

Magnesium Dosing Tips

  • If you are having issues raising your Magnesium, check to ensure your aquarium's magnesium level is between 1200-1350ppm and that the solution is added to a high flow area of the tank to help prevent precipitation.
  • Large additions of magnesium may cause your salinity to rise slightly. It is important to monitor the salinity of your aquarium and add fresh water if needed.
  • If a large amount of magnesium is needed, we suggest raising your aquarium no more than 100 ppm per day.
  • It is much safer to dose less and test again, than to overdose.
  • It is common for aquariums to not require much magnesium. In some cases, using a 10 day testing period to establish the daily dosing requirement may be necessary.
  • Throughout the day your aquarium's pH may change, causing elements to change in concentration. Testing at the time every day will lead to much more reliable and repeatable tests.