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Old 04/17/2019, 06:10 AM   #1
fishkeeprian
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Location: England, Earl Shilton
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alk consumption but not Calcium

Hello,

My tank is using around 1 DKH per week (tested with salifert) but my test for calcium is shown no consumption, what does this mean?

I do only have a small selection of corals, mainly frags (mixed lps and sps), I am seeing visual growth, nothing rapid tho.

I thought my tank was using Alk it would also use Calcium?

Thanks


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Old 04/17/2019, 06:25 AM   #2
Djbeasley05
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I have found when corraline algae is on the rise, it burns through a lot of alk. Do you notice more corraline algae lately on the rocks or glass?


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Old 04/17/2019, 06:33 AM   #3
fishkeeprian
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Quote:
Originally Posted by Djbeasley05 View Post
I have found when corraline algae is on the rise, it burns through a lot of alk. Do you notice more corraline algae lately on the rocks or glass?
Yes, plenty of Coraline algae.


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Old 04/17/2019, 07:06 PM   #4
bertoni
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1 dKH consumed corresponds to about 7 ppm of calcium consumed, which is below the testing limit for most of our kits. The tank likely is consuming calcium at the usual ratio, but a few processes can skew that:

http://reefkeeping.com/issues/2004-12/rhf/index.htm


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