Brightwell Aquatics Magnesion Liquid Magnesium

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Brightwell Aquatics

• 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.

  • Liquid
  • 250-ml

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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6 Reviewers (83%) would recommend this

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“Diluted and weak.”
1.0

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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“magnesium great”
5.0

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.

  • 1
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“Good Stuff”
5.0

8 ml per day keeps my 150 reef/fish set up at the correct level. Been using Brightwell products since initial setup in 2009

  • 1
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“great product”
5.0

I dose to my tank as instructed. The quality of water is now getting healthier.

  • 1
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“Excellent”
5.0

Great product, more concentrated then Kent products. Actually, the lead Chemist for Kent left them and started the Brightwell line on his own. So over all, its cheaper in price and more concentrated with the same quality if not better. I've had no ill effects on my reef tank using it.

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“Good Product”
5.0

I have been using this stuff for about 6 months now and like the rest of the Brightwell line it is top quality. Pretty highly concentrated stuff here, in my 80 it brought my mg up to 1500 for 1250 in less than two weeks folling the dosing directions on the bottle, and has helpe me maintian an alga f...Read More

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6 Reviewers (83%) would recommend this

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