metals in tank!!!

[Rob Batten]

http://lab.atiaquaristik.com/share/dd486292db07ec9dca2e
recently had an icp test done cos a couple sps starting to stn. test results came back and it shows iv got copper zinc and tin present. all other parameters are ok (nitrate tad high). iv double checked everything for rust but cant find nothing. then i sent off for another test after doing a water change
http://lab.atiaquaristik.com/share/f3949184d90cf81b19f9
and this shows the levels getting higher, again checked everything and no sings of rust! any suggestions would be a big help

 

[reef lover]

I would start by getting some poyfilter to remove the metals. Then I'd test my water source...do you have ro/di?

 

[Randy Holmes-Farley Verified Community Expert]

Yes, I'd start a metal export method as well. Polyfilter, metasorb, cuprisorb, etc.

When you say no signs of rust, that means there is no visible metal anywhere in the system, or that there is but it is not rusting?

 

[Rob Batten]

Got a poly filter and will install when I get home.
Yes there are magnets in the tank but none of them are showing any signs of rust

 

[Randy Holmes-Farley Verified Community Expert]

Got a poly filter and will install when I get home.
Yes there are magnets in the tank but none of them are showing any signs of rust

They may not be an issue at all, but some materials would not show visible "rust" when corroding.

https://www.intechopen.com/books/ap...sed-to-tropical-seawater-a-contribution-from-
https://www.intechopen.com/source/html/41472/media/image26.jpeg

Pits formed at grain boundaries of a 316L SS undergoing cyclic loading in natural seawater.