I was wondering today about calcium levels

[Greg Clayton]

I was wondering how quickly stony skeletal corals deplete calcium levels in a tank. I got a large-ish frag of a stony coral and I'm. Curious how quickly the calcium levels will begin to drop.

 

[20gallonreefer000]

It depends on the type of coral and how many gallons the tank is. If you have a picture as well that would be great. Testing the tank weekly and dosing/adjusting the dosing should do the job :) It's pretty hard to tell how quickly is will deplete as conditions vary.

 

[Mr. Mojo Rising]

One coral frag won't make any difference in calcium level or other parameters. Even if you added 50 corals at once, it takes months for corals to fully acclimate and start growing, corals are not consuming much elements from the water until they start growing. With that said, alkalinity is so much more important than calcium. These are very complex topics I would suggest that you do a little research

 

[Reefering1]

18-20ppm of calcium per 2.8dkh of alk.