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
 

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
35,474
Reaction score
23,568
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
24,929
Reaction score
120,910
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
 
Best reef aquarium LED lighting

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
35,474
Reaction score
23,568
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.
 
https://www.omegasea.net/
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/

Hair Algae in your aquarium. Choose all that apply!

  • I've never had hair algae

    Votes: 50 8.5%
  • I Have had a little but nothing major

    Votes: 147 24.9%
  • I Have had several tough outbreaks

    Votes: 76 12.9%
  • I Have had a major outbreak that I won

    Votes: 178 30.1%
  • Have had a major outbreak that caused me to tear the tank down

    Votes: 25 4.2%
  • I am battling a little hair algae now

    Votes: 152 25.7%
  • I am battling a major outbreak right now

    Votes: 63 10.7%
  • Other (please explain)

    Votes: 8 1.4%

Online statistics

Members online
1,409
Guests online
3,889
Total visitors
5,298
The IceCap Gyre is back and better than ever!
Top