12-02-2009, 09:55 AM
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Originally Posted by 6998
i have a calcium test i was told by the petstore that calcium is more for corals than fish
I think the correct way for them to state that is, "Regular Calcium testing will show that Calcium levels are most affected in a tank with Hard & Soft Corals. However, because Coraline Algae growth is dependant on Calcium, you will see a fluxuation in Calcium levels with Coraline growth. Also, although Calcium is less likely to be depleted by Fish alone, regular Calcium testing is still vital to ensure water quality in a marine tank."
As you test for Alkalinity and Calcium, you will see a relationship between the two. It is this relationship that will help you foresee bad things to happen in the tank, and when to change the water.