Best way to lower Calcium..?

[trockafella]

..?

[scott711]

let the tank sit and it will come down naturally or if your water change water has lower calcium, do a water change

[reefmontalvo]

I was going to say the same thing. Just stop dosing and let things run naturaly.

[Origami]

Calcium should, with normal consumption of your hard- or other skeleton forming corals, come down around 20 ppm with each milliequivalent of alkalinity consumed. (1 milliequivalent of alkalinity is 2.8 dKH.) So, it's going to feel like it's coming down somewhat slowly. Remember, though, that in normal consumption, your alkalinity WILL be falling, too. If you want only your calcium numbers to fall, you'll have to replenish the consumed alkalinity along the way. Use something like baking soda or soda ash to do this.

[lanman]

Grow more coral...

 

bob

[watson_barrett]

water change and increase ALK to balance. If you don't increase ALK, cal will stay too high.

[watson_barrett]

If you run a ca reator an easy way to increase alk is to increase CO2 entering reactor. Just make sure you increase eufilent output equaly or your media will melt...