Copper in Display

https://www.triton.de/en/

Overboard

Active Member
View Badges
Joined
Jan 8, 2010
Messages
257
Reaction score
215
Location
Sugar Land, Texas
So my ATI results shows Copper at 7.09 micrograms per liter. I tested with Hanna high ranger copper checker and got .07 ppm. Are these levels problematic for SPS corals?

Thanks!
Mark
 
Top Shelf Aquatics

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
35,483
Reaction score
23,588
Location
Arlington, Massachusetts, United States
Those two numbers differ by a factor of 10. My tank has been higher than the 7 ppb without apparent issue, but the particular organics the copper binds to impacts toxicity a lot. I’d ignore the Hanna value as I think
The icp is likely more accurate.
 

Crabs McJones

Mayor Of Reef2Reef
View Badges
Joined
Jul 24, 2017
Messages
24,943
Reaction score
121,004
Location
Wisconsin
Keep in mind also, that the hannah copper checker has an accuracy of +/- .05 ppm. So you could really be at the lowest .02ppm or at the high end .12 ppm
Agree that I'd trust the icp test over hannah in this case
 

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
35,483
Reaction score
23,588
Location
Arlington, Massachusetts, United States
So the value, assuming you did everything perfectly And Hanna knows the uncertainty correctly is 70 +/- 50 ppb. I don’t think that is a useful test for a normal reef tank.
 
OP
Overboard

Overboard

Active Member
View Badges
Joined
Jan 8, 2010
Messages
257
Reaction score
215
Location
Sugar Land, Texas
I realize the Hanna test is not as accurate as ATI, but I tested my new batch of SW and it tested at the same reading as my display, .07. Like Randy said, way off the ATI result. But when I tested my RO/DI water, it was .02. Maybe the test is not sufficiently accurate for this to matter, but one guess is the old (really old) Eheim pump I use to mix SW might be leaching into the water. Even though there were no other metals detected in the ATI test, I pulled it just to be safe. I don’t have the ATI results on my RO/DI yet, but that will be helpful.

Thanks!!
 
https://www.triton.de/en/

Do you think a xenia refugium is an effective method of water filtration?

  • Yes

    Votes: 64 11.5%
  • No

    Votes: 87 15.6%
  • Maybe considering the set up

    Votes: 90 16.2%
  • Never considered it

    Votes: 308 55.4%
  • Other (please explain)

    Votes: 7 1.3%

Online statistics

Members online
2,669
Guests online
5,858
Total visitors
8,527
Aquaticlife
Top