Brightwell Aquatics

Brightwell Aquatics Magnesion - Liquid Magnesium Supplement for Reef Aquaria 500ml / 17oz

BW01038


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Overview
  • Highly-concentrated ionic magnesium solution.
  • Provides magnesium, which helps regulate the balance between calcium and carbonates in aquarium water, and is a component of aragonite, the mineral secreted by reef-building organisms such as corals, clams, and their allies to form skeletal material.
  • Stronger than most competing products.
  • Contains no unwanted organic material such as EDTA, gluconate, or polygluconate.
  • Formulated by a marine scientist.
Technical Background
Magnesium plays a vital role in reef aquaria: it helps maintain calcium and carbonate (composing the majority of measurable alkalinity) concentrations by limiting unwanted inorganic precipitation with each other. In the absence of adequate magnesium ions, calcium and carbonate ions bond rapidly, depleting their concentrations in the system and creating the false impression that heavier supplementation is required to re-establish the desired concentrations. No matter how much calcium is added, its natural seawater concentration of 412 ppm will never be sustained until the magnesium concentration begins to approach 1,290 ppm. Once the balance between calcium and magnesium has been established, subsequent calcium supplementation yields immediate positive results. Keeping magnesium within a range of 1,290-1,320 ppm will maintain the desired balance, and provides enough of the element to reef-building organisms for the formation of aragonite (~0.10% Mg by weight).
The rate at which magnesium is extracted from the water is determined by the stocking density of reef-building livestock, type of lighting, and other conditions; therefore, each aquarium will have different requirements for the rate of magnesium supplementation. Once the rate of magnesium uptake in the aquarium has been determined, the proper dosing rate of this product can be easily calculated. It is recommended that a quality salt mix with the proper (not augmented) alkalinity and concentrations of major, minor, and trace elements be used to establish natural seawater parameters in the reef aquarium, providing a stable ionic foundation on which to build.
All Brightwell Aquatics liquid water care supplements are made with purified water and high purity materials. We develop formulae for aquaria based on empirical data, using observation and measurement rather than theory.

Instructions and Guidelines
Basic: Shake product well before using. Add 5 ml (1 capful) of product per 20 US-gallons of aquarium water every other day or as needed to maintain the magnesium concentration within a range of 1,290 - 1,320 ppm. When used in this fashion, 250 ml treats up to 1,000 US-gallons (3,785 L).
Advanced: Determine the magnesium concentration in the aquarium using an accurate test kit before supplementing. Shake this product well before using. Each ml of Magnesion will increase the concentration of magnesium (“[Mg2+]”) in 1 US-gallon (3.785 L) of water by 26 ppm. If the initial [Mg2+] in the aquarium is below 1,288 ppm, add this product at the maximum rate of 10 ml per 20 US-gallons daily until the desired concentration is attained, then dose daily or weekly as needed (see below). Always try to maintain the [Mg2+] within a range of +/-10 ppm. To determine the dosing rate of this product once the desired [Mg2+] has been acquired, measure the daily rate of magnesium uptake (i.e. the decrease in magnesium) in your aquarium by measuring the aquarium`s [Mg2+] at the same time each day over a one- to two-week period. To determine the daily dosing rate (preferable to weekly dosing) for magnesium maintenance: estimate the volume of water in the entire aquarium system; divide the daily decrease in [Mg2+] by 26; multiply this number by the volume of water in the system to get the daily dosage required (ml) to maintain a stable [Mg2+]. Daily dosing maintains a more stable [Mg2+] (and more natural environment) than dosing weekly, in which the [Mg2+] spikes just after dosing and then gradually decreases throughout the course of the week.

Caution: Keep out of reach of children. Not for human consumption.

Guaranteed Analysis
Magnesium (min) 2,959 mg/oz. (100,000 ppm)
Ingredients
Purified water, Magnesium sulfate, Magnesium chloride

Reef Chemistry Calculator

Use our chemistry calculator to find out how much you need to add to your aquarium.


Manufacturer Info

Brightwell Aquatics Aquarium Supplies
The goal of Brightwell Aquatics is to provide the absolute highest quality, scientifically-sound products and customer service of any aquarium water care manufacturer, and to do it all in a straight-forward and honorable fashion. All Brightwell products are formulated by marine scientists with a passion for the aquarium hobby. They utilize the highest purity ingredients in concentrations that provide the most use to hobbyists. Nearly all Brightwell Aquatics products are over 99.9% pure. The usage guidelines of Brightwell Aquatics products are written in plain language but the company is always available to answer consumer questions. All products are lot numbered for quality control and customer service.

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  • 4.5

11 Reviewers (91%) would recommend this

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Products and services

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Everyone at MarineDepot is top of the line professionals. Love them all. All my products come from Marine Depot
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5
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Brightwell Aquatics Magnesion

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great price great product
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none
REVIEW
works as described dependable been dosing with brightwell for years
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4
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Works well
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Works well
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None
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Helps keep my magnesium parameters stable. Works well work great results, would recommend.
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5
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Best Mag out there
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I love Brightwell Aquatics Magnesium. I've been using it for over a decade now and wouldn't switch for anything. Brightwell makes incredible products, and amazing quality.
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5
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Ions
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Good product, good price
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None
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Brightwell products are very high quality and Marine Depot has them for great prices.
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1.0
Diluted and weak.

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REVIEW
This stuff must be water. Have to dose excessive amounts just to get my Mg up a little. I test every day and my levels have not increased much. I know better than this. I used to use SeaChem's Magnesium and never had any trouble raising my Mg level. I see a lot of you praising this garbage, but I wo...Read More
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5
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magnesium great

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I only use Bright well products, there all compatible with each other in my reef 40 gal. I only use Reef code A and B, Snow, and Magnesium. Also throw in the refegium a chemi-pure elite, corals are happy, my 2 clowns. There going on 3 years of age.
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