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🌟 Elevate your reef’s vitality with pure, powerful magnesium — because your aquarium deserves the best!
Reef Advantage Magnesium is a highly concentrated, ammonia-free blend of magnesium, chloride, and sulfate salts designed to restore and maintain optimal magnesium levels in saltwater aquariums. It supports stable pH and ionic balance, treats large volumes efficiently, and is trusted by reef enthusiasts to prevent magnesium depletion caused by kalkwasser and carbonate additives.
| ASIN | B001F0MMBO |
| ASIN | B001F0MMBO |
| Age Range Description | all stages |
| Best Sellers Rank | #153,658 in Health & Household ( See Top 100 in Health & Household ) #2,027 in Magnesium Mineral Supplements |
| Brand Name | Seachem |
| Color | white |
| Customer Reviews | 4.6 4.6 out of 5 stars (159) |
| Date First Available | August 28, 2008 |
| Date First Available | August 28, 2008 |
| Directions | Use 5 g (1 level teaspoon) per 80 L (20 gallons) twice a week. Dissolve in at least 250 mL (1 cup) of freshwater. For precise dosing, use the Seachem Digital Spoon Scale. |
| Included Components | all |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 3.75 x 3.75 x 7.75 inches |
| Item Package Dimensions L x W x H | 8.03 x 3.7 x 3.7 inches |
| Item Weight | 2.4 Pounds |
| Item model number | 637 |
| Item model number | 637 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer | Seachem Laboratories, Inc. |
| Model Name | Reef Advantage Magnesium 1.2 kg |
| Number of Items | 1 |
| Product Dimensions | 3.75 x 3.75 x 7.75 inches; 2.44 Pounds |
| Size | 1.2 kg / 2.6 lbs |
| Specific Uses for Product | Active |
| Target Audience Keyword | fish;algae-eaters; betta-fish; bottom-feeder-fish; cichlid-fish; goldfish; invertebrate-fish; mollusks; octopuses; rays; sharks; snails |
E**D
Works🤷🏽♂️like it should
Works to bring magnesium up, easy to use
K**E
Cheap good aquarium Magnesium
Did you accidentally fill your aquarium with regular water softener salt, and later realize that Magnesium is very important in saltwater? Cheapest way to bring that bad boy right back up.
T**Y
SeaChem is the best!
I have had a reef tank for about three years now and the SeaChem products is all I ever dose with. They dissolve easy and are a great price. They are also made right in Georgia so it is a Made in USA product which is great.
M**S
Large size, dissolves well in RO water always a consistent product.
Nice bulk size container. Always dissolves well in RO water. I only Use seachem products for my reef tank.
H**T
Go to for mag in my reef.
Not a lot to say , it's the mag I use I'm my reef. It's stable and works very well
A**R
Good product
This is by far my favorite magnesium supplement and one of the cheapest ones to use. Personally I don’t like using a liquid form of anything I’ve found it to contain a lot of other “harmful” things In it. I just mix this up with fresh RODI water and make my own liquid form.
D**S
It’s very good
Very necessary supplement for reef because it really created an seawater
A**R
Works perfectly for me.
I dose Reef Advantage Magnesium in my topoff water. It dissolves easily and there is never a precipitate. Once I tried Reef Advantage I have never used a liquid concentrate since. My Magnesium levels remain in a very narrow range around 1300 ppm. I use a lot of SeaChem products and trust this brand.
S**O
Confezione integra, prodotto arrivato prima del previsto, prezzo conveniente. Per chi ha acquari grandi la confezione da 1.2 kg è l'ideale. Consigliato
M**.
I’ve noticed a big difference in my corals after daily dosing of magnesium. They obviously needed a bit more. Very happy
S**R
Facimente diluibile e utilizzabile con una pompa dosometrica
Trustpilot
2 months ago
1 month ago