Calcium consumption.

[Doug]

Mike, a tank will need some kind of calcium supplementation, regardless of livestock. One think I have found over the years, the best hair algae on rock fighter, is lots of coralline. So if the coralline dies, another algae will replace it.

Also many corals, not sps, use calcium. For instance green star polyps, any coral that lays down or grows some sort of base, {not leather types}, consume calcium. Replacing evaporation water with kalk, is the easiest and cheapest way of replacing it. What I am saying here, is if thats all ones tank requires, then you have it made.

C.M., I must also agree I like my reactor, but would like it better if only kalk was needed, but thats not the case, like you. I must admit the reactors ability to add strontium and magnesium, along with many other trace elements is appealing. I always had trouble with magnesium levels, until using a reactor. Plus the stable alk. they produce.