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Old 01-20-2010, 02:02 PM
c_scherer123 c_scherer123 is offline
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Location: Athabasca, Alberta (Canada)
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Default Why is my Mg always so low?

I have had my 20g for about 8-9 months. I have perpetually low Mg, even though I dose it bi-weekly or more often. The fresh salt batches come in at 1400 mg.
Calcium is 500
Magnesium is 900

I can tell when my magnesium is below 1200, as all my polyps (especially the GSP) and torch corals close up.
I did notice that the coraline algae is starting to grow all over the rocks and glass. I removed the small bit of chaeto I had and that noticeably helped keep the MG level steadier.

Any ideas?

Last edited by c_scherer123; 01-21-2010 at 01:30 AM. Reason: fixing typo
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