OK, I messed up and the answer is wait and see but wanted some thoughts because I hate waiting. I hadnt tested my water for two months. I have a fairly heavly load hard coral tank (not crazy load like some picutres but working on it). Frogspwan with 50 heads, glaxia, acros etc. Anyway I had my system in balance and was adding the same amount of two part (home made) dosage to keep my alk and calcium up. As I said, I hadnt tested my water in two months and then noticed some white tips on one coral and then within a couple of days the whole thing died. This was about a 8 inch hard coral Then I saw some other white tips on some acros. I tested my water and my alk was great but my calcium had gone down to 330!!! I dosed the heck out of the tank over the next 24 hours. Calcium now up to 450 and watching it closely. The hard corals are looking a littlle dead on the ends, but the body is good. What is the chance of recovering?

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White tip corals

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Calcium Problems!

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Original post: 
ph probe – in the reactor or in the sump or in the tank

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Here is the original:
Did I hear you can use Dolomite in the calcium reactor for magnesium supplement?

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Overview The carbonate-bearing component of a two-part method for dosing calcium and carbonates (the substances largely responsible for increasing alkalinity (buffering capacity)) in the same ratio as that found in natural seawater. Ionically-balanced with respect to natural seawater concentrations of calcium and carbonates when used in equal amounts with Reef Code A. Benefits reef-building organisms such as corals, clams, calcareous algae, etc. Simplifies calcium and alkalinity maintenance. Stronger than most competing products. Contains no phosphate, silicate, or organic material. Formulated by a marine scientist.Technical BackgroundThis method of calcium and carbonate supplementation is advantageous to hobbyists interested in a simple and effective solution to providing the very elements and molecules required for growth of reef-building organisms such as corals, clams, and their allies. Corals and other reef-building organisms require adequate and stable (more…)

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