Calcium consumption.

[Doug]

Just a view on the tanks consumption of calcium over the last little while. Most of my corals have been removed during the flatworm wars and no more will be added until the tanks "exited".

During the last few months, my tank has shown me how much calcium I always believed coralline used.

The only corals using it are the bubble for its base, a cup coral and some remaining monti digita frags. I have been trying to just run on kalk, with my reactor off. My calcium has dropped from about 420ppm to 330ppm.

My tank evaporate a fair bit and its all kalk replaced, at least a couple gals/day, yet it cant meet the demand. I use a pretty heavy mixture also. No idea how some people keep up to their corals demand, with kalk alone, in a large tank.

With my reactor running the last few days, its slowly starting to climb.

My tank has lots of heavily coralline encrusted Fiji rock. As I have always said to those asking how to grow coralline, "be careful what you wish for".