Do You All Dose Calcium?

[Mister_Palmer]

It seems like a lot of people add Calcium to their tanks, but I've never added any sort of Calcium additive.

Is that odd?

My Calcium fluctuates between 480-520, never gone higher or lower with my API Tester.
I've got a ton of Coralline, and the KH is consistently around 8.

I do about an 18% Water change every 2 weeks I guess.
I guess I'm kind of curious as to what makes the calcium go down, that there's so many calcium products out there.

 

[Flippers4pups]

Just a little kalkwasser in ATO.

 

[zero26]

CA is used up by corals and coralline algae. I you have alot of sps, lps you'll see it start going down. I add about 10 oz a week of BRS CA mix.

 

[u4ick]

You are steadily replacing calcium in your tank through your frequent water changes, and you indicated that coralline algae being the only consumer of it (ie: tag says fish and softies). For those with corals of the stony variety adding calcium is usually a requirement.

 

[reefergeorge]

I dose two part plus mag. Mainly because I rarely do waterchanges..