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ESV B-Ionic Magnesium, 1 gallon.
B-Ionic Magnesium, 1 gallon, E.S.V. B-Ionic Magnesium supplies a critical element necessary for most corals to thrive in a home aquarium environment. 
 
$19.09
 
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ESV B-Ionic Magnesium 32oz
B-Ionic Magnesium 32oz. E.S.V. B-Ionic Magnesium supplies a critical element necessary for most corals to thrive in a home aquarium environment. 
 
$8.99
 
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Kent Marine Tech-M Magnesium, 128oz
Tech-M Magnesium supplement is a ionically balanced product which will safely raise the magnesium level in any marine system without upsetting the ion... 
 
$18.99
 
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Kent Marine Tech-M Magnesium, 16oz
Tech-M Magnesium supplement is a ionically balanced product which will safely raise the magnesium level in any marine system without upsetting the ion... 
 
$6.99
 
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Kent Marine Tech-M Magnesium, 64oz
Tech-M Magnesium supplement is a ionically balanced product which will safely raise the magnesium level in any marine system without upsetting the ion... 
 
$14.99
 
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Salifert Magnesium 1000ml. LIQUID.
Salifert Magnesium fl 1000ml. LIQUID. Magnesium is present in NSW (Natural Sea Water) in a fairly high concentration (1350 - 1500 mg - L). Magnesiu... 
 
$19.99
 
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Salifert Magnesium, 250ml. LIQUID.
Salifert Magnesium, 250ml. LIQUID. Magnesium is present in NSW (Natural Sea Water) in a fairly high concentration (1350 - 1500 mg - L). Magnesium i... 
 
$8.99
 
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Salifert Magnesium, 500ml. LIQUID.
Salifert Magnesium fl 500ml. LIQUID. Magnesium is present in NSW (Natural Sea Water) in a fairly high concentration (1350 - 1500 mg - L). Magnesium ... 
 
$14.99
 
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Salifert Magnesium sd 250ml. POWDER.
Salifert Magnesium sd 250ml. POWDER. Magnesium is present in NSW (Natural Sea Water) in a fairly high concentration (1350 - 1500 mg - L). Magnesium... 
 
$9.99
 
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Salifert Magnesium sd 500ml. POWDER.
Salifert Magnesium sd 500ml. POWDER. Magnesium is present in NSW (Natural Sea Water) in a fairly high concentration (1350 - 1500 mg - L). Magnesium ... 
 
$16.99
 
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Seachem Reef Advantage Magnesium 2 kg (4.4 lbs).
Seachem Reef Advantage Magnesium 2 kg (4.4 lbs). is a concentrated (80,000 ppm) optimized blend of magnesium, chloride and sulfate salts designed to r... 
 
$16.99
 
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Seachem Reef Advantage Magnesium 300g (10.6oz)
Seachem Reef Advantage Magnesium 300g (10.6oz) is a concentrated (80,000 ppm) optimized blend of magnesium, chloride and sulfate salts designed to res... 
 
$4.99
 
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Seachem Reef Advantage Magnesium, 4kg., 8.8 lbs.
Seachem Reef Advantage Magnesium, Seachem 4kg., 8.8 lbs. is aconcentrated (80,000 ppm) optimized blend of magnesium, chloride and sulfate salts design... 
 
$29.99
 
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Seachem Reef Advantage Magnesium 600g (1.3 lbs)
Seachem Reef Advantage Magnesium 600g (1.3 lbs) is a concentrated (80,000 ppm) optimized blend of magnesium, chloride and sulfate salts designed to re... 
 
$7.99
 
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Magnesium Additives