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Old 01-31-2011, 12:40 PM   #1
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Magnesium level

How much ppm magnesium is required in a 75 gal salt h2o tank

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Old 01-31-2011, 01:25 PM   #2
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It depends on what type of corals you plan on having. Calcium, alkalinity and magnesium go hand in hand and need to be balanced. Having a high mg level and low calcium will not get you the results you desire.

Sps coral frags, clams - 12dkh, calcium 465, and mg 1390

Soft corals and large sps, 8dkh, calcium430, and mg 1280

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Old 01-31-2011, 08:06 PM   #3
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Reef Aquarium Water Parameters by Randy Holmes-Farley - Reefkeeping.com
Calcium: 380 - 450 ppm
Alk: 7 - 11 dKH
Mag: 1250 - 1350 ppm
125g reef
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level, magnesium

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