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Old 09/12/2018, 09:49 AM   #1
Fuzms
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Location: Oklahoma City, USA
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VERY high strontium levels.

My Triton ICP came back today claiming 2011 mg/l Strontium. First, should I believe this? Second, how are my corals alive if >15ppm is considered toxic to some things? Third, ways to reduce?


Anecdotally I have noticed my corals look much healthier with VERY high Ca levels (think 1000ppm). Could this be related?

Element Analysis Setpoint Deviation
Hg 0 g/l 0,1 g/l -0.10
Se 0 g/l 0,1 g/l -0.10
Cd 0 g/l 0,1 g/l -0.10
Sn 41 g/l 0,1 g/l 40.90
Sb 0 g/l 0,1 g/l -0.10
As 0 g/l 0,1 g/l -0.10
Al 69 g/l 2 g/l 67.00
Pb 0 g/l 0,1 g/l -0.10
Ti 0 g/l 0,1 g/l -0.10
Cu 4.845 g/l 0.1 g/l 4.75
La 0 g/l 0.1 g/l -0.10
Sc 0 g/l 0.1 g/l -0.10
W 0 g/l 0.1 g/l -0.10
Na 10327 mg/l 10700 mg/l -373.00
Ca 1249 mg/l 440 mg/l 809.00
Mg 1374 mg/l 1370 mg/l 4.00
K 334 mg/l 400 mg/l -66.00
Br 90 mg/l 62 mg/l 28.00
B 4.006 mg/l 4,5 mg/l -0.49
Sr 2011 mg/l 8 mg/l 2003.00
S 905 mg/l 900 mg/l 5.00
Li 1691 g/l 200 g/l 1491.00
Ni 0 g/l 5 g/l -5.00
Mo 14 g/l 12 g/l 2.00
V 0 g/l 1,2 g/l -1.20
Zn 7.296 g/l 4 g/l 3.30
Mn 0 g/l 2 g/l -2.00
I 18 g/l 60 g/l -42.00
Cr 0 g/l 0,1 g/l -0.10
Co 0 g/l 0,1 g/l -0.10
Fe 0 g/l 0,1 g/l -0.10
Ba 25 g/l 10 g/l 15.00
Be 0 g/l 0,1 g/l -0.10
Si 147 g/l 100 g/l 47.00
P 12 g/l 6 g/l 6.00
PO4 0.03672 mg/l 0.01836 mg/l 0.019


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Old 09/12/2018, 12:24 PM   #2
Ostentum
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How is it possible to have your Calcium that high with Mg at 1374. Chemically it should precipitate out if your Alk is within the proper parameters. Same with Strontium, not sure how thats possible.


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Old 09/12/2018, 01:02 PM   #3
Fuzms
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Good question, I'll test my Alk when I get home.


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Old 09/12/2018, 08:20 PM   #4
bertoni
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I don't think that the calcium number is correct. That's rather high. It'll be interesting to see the alkalinity number.


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Old 09/13/2018, 08:12 AM   #5
Fuzms
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The Ca seemed high to me as well. My Redsea kit tested the Ca at 790ppm and the Alk at 9.0 dKH.


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Old 09/13/2018, 09:28 PM   #6
bertoni
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790 ppm of calcium already is very high. I don't particularly believe 1249 ppm. I'd ignore the result, but you could try another test kit, maybe at a local fish store or the like.


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Old 09/14/2018, 07:30 AM   #7
Fuzms
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As I said, my corals seem to prefer VERY high Ca. I have tested it with my own kit (790), petco (~800), 2x LFS (both high 700's). So, I think I trust that Ca is right around 800ppm.

I don't know why my corals seem to like this. My first question is are these tests testing for total Ca, but that someway about half my Ca is bound up in a way unusable by my corals?

A bigger concern for me is how and why Sr is so high? Li is also high. I was wondering if one of these effecting Ca availability and would explain why my corals like Ca so high. And then, of course, how to bring Sr and Li back in line and maintain them that way.


Side note, I use IO reef crystals.


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Old 09/14/2018, 01:49 PM   #8
bertoni
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I am not sure what might be the issue, but I can't think of anything that would bind the calcium so that it could be read by the test but not used by corals. Strontium is chemically very similar to calcium. If it's actually that high, which I doubt, it would be measured by the calcium kit, most likely, as it's very hard to test for just one of the two. Lithium that high, if real, most likely would be from a bad batch of salt. I might try a new batch of salt, and see what changes that makes.


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