Comments: Love this product! Wouldn't switch for any brand. Excellent price.

Comments: A lot of reefers, especially when first starting out, don't realize the importance of magnesium. They hear calcium & alkalinity so much, they don't realize proper magnesium levels are crucial to help keeping your tank stable. If you are seriously deficient in magnesium, it is going to take a LOT of this supplement to raise your levels. I fill a bucket with R/O water, put a cup or so of the crystals in, drop a powerhead in to help dissolve the crystals for about 15-30 minutes, then add the mix to the tank. Seachem products have never let me down. Just remember, if you have a big tank and need to raise your levels up to 1300+, the biggest container (4L) is the best bang for your buck.

Comments: Be sure to order a magnesium test kit with the supplement. I bought the salifert kit and found it easy to interpret with highly reproducible results. You will use a lot of magnesium to get small bumps in the tank's magnesium level, but being in ionic balance has made my pH much easier to maintain. I needed to bring my magnesium level up ~300ppm, which took a lot of supplementation, but maintaining the new level has been easy since I switched to Seachem calcium supplement with maintenance levels of magnesium in it.

Comments: Way more economical than buying liquid solutions, and also raises calcium faster than ESV Magnesium.

Comments: Good product, good value. I mix up a gal @ a time and dose everyday automatically with a timer.

Comments: inexpensive and works great. I bought the largest container for the best value. A pain in butt though to get the lid off.

Comments: Easy to use for the beginner as well as the advanced or expert user

Comments: Got this about a week ago - has taken a few days of dosing to see any movement, but I'm hopeful that with small dosing increases my levels will reach their optimum.
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<br />good bang for the buck on this product and of course the standard marinedepot.com speedy delivery and processing.

Comments: By adding Seachem Reef Advantage Magnesium I can now maintain proper balance, and my Coraline algae growth rate has tripled.

Comments: Product dissolves easily and increases or maintains Mg levels.

Comments: Added three cups to my 150 gallon system to raise Mag by about 100 PPM. It always take a lot of Mag to raise a tank's level. Had to dissolve each cup in about half a gallon of RO water.

Comments: Grate product. Highly recommended if you like good coral growth and health. They need this just as bad as calcium.

Comments: Dry powder always seems like you get more than liquids. Seachem is a trusted name and I would recommend this additive for MG.

Comments: seems to work just fine.
<br />buy a big container, it takes a lot to raise Mg a little.
<br />pay attention to your SG, as this will raise when dosing.

Comments: A lot of people will tell you to go get some epson salt because its the same thing. That is not a true statement. This is much more concentrated amount of magnesium and to get the same dosage amount in the tank I only have to use a fraction of the amount. Great product!

Comments: The crystals take a while to dissolve. I would recommend Kent Marine Tech M.

Comments: Worked great. It raised MG to the level I needed, but took some time to dissolve completely. I let it stand overnight to dissolve. This is the first dry MG supplement I've used, I have used Kent's liquid version in the past, but It was too expensive for the amount I needed. The dry seems to be a better deal.

Comments: I just used it and my coral and zoos are doing much better

Comments: great product!! i love the size. i use to not buy seachems mag just because they did not sell a big enough size for my needs. this i will buy for now on, if they keep this size that is.