Originally Posted by agfish12
Honestly I'd do 25% water changes weekly to get your calcium back up instead of trying to dose.
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Okay I will try that. I just read that article. What I got from that is in my situation if I were to use an additive of calcium and alkalinity to raise it to 420 ppm
it wouldn't precipitate out of the water. I could then have good stable water parameters. The only thing low would be the magnesium. As the calcium and alkalinity are raised though, they will be depleted quickly, and magnesium may not be needed in such a small tank where the calcium will just be taken up before it is precipitated. If it happens to precipitate though, I could just add a magnesium supplementation. I had talked to someone at my LFS
and they said I should dose this Reef Code A by Brightwell Aquatics. It is a balanced calcium and alkalinity for reef tanks. Should I first start doing the water changes weekly and see what that does? Then try this? Only thing is this says to use this only with 1300ppm of magnesium. But from this article, if I added this since my levels are so low, they wont begin to precipitate out. Right?