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Old 01-10-2013, 03:39 PM   #1
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Always Low on Calcium?

55 gallon with 20 gallon sump/refugium. Corals

Candy cane
Hammer
Frogspawn
Mushroom leather
A bunch of zoa frags
Alveopora
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Old 01-10-2013, 03:42 PM   #2
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Acan

And some other randoms. Every time I get my water tested my calcium is at around 380. I do weekly or some times biweekly water changes with water from the lfs. I have been dosing calcium feels like forever but it rarely goes up. When it does it won't stay there long
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Old 01-10-2013, 03:44 PM   #3
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check KH, unstable KH can lead to unstable calcium level also
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Old 01-10-2013, 03:49 PM   #4
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First thing I would do is test your lfs waters calcium level to make sure you aren't starting low from the start. The corals you listed aren't really big calcium consumers like some sps.
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Old 01-10-2013, 03:50 PM   #5
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Yes KH can be your culprit, but from my understanding Mg and Ca react with one another in your tank water, so your Mg levels may also directly affect the stability or fluctuation of your Ca in your water.
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Old 01-10-2013, 05:34 PM   #6
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Well my coraline has been going ape on the glass lately. Lfs says that is probably sucking up a lot of the calcium. They said 380 is just alittle low. It is just weird because I always feel like my led lighting is fueling coraline but burning my coral.
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Old 01-12-2013, 12:18 AM   #7
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Im having the same problem. What kind of salt are you using? Im using reef crystals and KH and calcium has been low..
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Old 01-12-2013, 01:05 AM   #8
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I had that issue, I use the same salt. Reef crystals from instant ocean. I had to start dosing B-ionic 2 part every night at 8mL's. everything is very happy and growing well now.
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Old 01-12-2013, 01:25 AM   #9
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I just recently changed salts
I used IO reef crystals always had issues with all my water parameters
so I tried Kent marine reef salt and I love it
not only did all my problems go away my corals doubled in size
and my Coraline growth kicked in

everything seems so much happier now
I also put 1 drop iodine every night

hold steady salinity of 1.025 calcium sits steady at 470 kh is 11.5
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Old 01-12-2013, 02:01 AM   #10
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Quote:
Originally Posted by 54seaweed View Post
I just recently changed salts
I used IO reef crystals always had issues with all my water parameters
so I tried Kent marine reef salt and I love it
not only did all my problems go away my corals doubled in size
and my Coraline growth kicked in

everything seems so much happier now
I also put 1 drop iodine every night

hold steady salinity of 1.025 calcium sits steady at 470 kh is 11.5
Also just changed to kents reef salt and love it coraline also went crazy lol only problem sometimes the alk mixes low but then i just add a buffer.
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