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Red Sea's dry magnesium additive adds magnesium in proper chloride/sulfate proportions when used with the Red Sea Reef Foundation System.
Also available in 500 mL Liquid Supplement.
Wurkt fer me By JasonK on 9/16/2015JasonK would recommend this product to a friendI've been using the red sea products for a year now and have been impressed. I don't have the same issues as Jose but i dont use an auto dosing system since mag is pretty stable in my tank. I just mix with rodi water when i need to boost the levels. I typically mix 28 grams in about 1/3rd gallon of water, mix for a few seconds then add to my sump. I wonder if Jose is using a much higher concentration or salted water.
If You Love Red Sea, But Want To Save Money, This Is Your Ticket By Lindsey on 1/27/2014Lindsey would recommend this product to a friendPersonally I love the red sea line for a number of reasons I won't get into. The liquids are convenient, but I also like to save my reefing budget for more coral, so the powdered versions are a win for me. They mix to the same concentration as the liquid bottles, but you can make multiple bottles from each jar of powder. For this magnesium, 1 powder jar will make 3 and 1/3 of the 500 mL bottles. That makes it about 1/3 the price.
Couple tips: do invest in a decent scale that will weigh in grams if you do not have one, easier and more accurate that way. Also, I don't know what happened with Jose's solution, but I have not had the same issue. When I mix any kind of stock solutions I use RO/DI or distilled and heat the water up to about 80 or 90 F by standing it in a sink full of hot water for a bit. Then I add the powder to the water slowly while stirring constantly. Never had an issue.
Not impressed By Jose on 1/29/2013Jose wouldn't recommend this product to a friendI recently purchased the powder supplement to create stock solution for auto dosing. After several days of trying to fully dissolve in a bucket with a maxijet and heater I gave up. I would not recommend this is you intend to use an auto doser as you would have to agitate before dosing. I called Red Sea customer support and they were not much help.