ICP shows chrome and tin

[Derrick0580]

I just received an icp test back and it shows chrome(i assume chromium) and tin being elevated. First guess was an exposed magnet. Checked frag rack and this is what I found…does this appear to be a leaking magnet? Pics attached of discolored magnet, magnet that appears in good shape, and both side by side.

 

[Derrick0580]

Icp results

//lab.atiaquaristik.com/share/17bab584c9c101f3f574

sorry, but I can’t figure out how to post actual results

 

[s_miles]

I also have recently received ICP analysis with Tin. It has increased from 5 ppb to 20 ppb since December.

Triton suggested I look for rusted metal. I have not found anything obvious, but I use Vortech power heads known to crack and leach metals. I don’t know if EcoTech has eliminated this issue or not? I don’t see any obvious leaks.

You should read this post, and several others related to tin in Plastic:

Triton ICP - tin?

Everything else was pretty spot on, except some elements they suggested dosing for, that were still in the green, but close to borderline. But Silicon which I believe came from my biomedia, because I haven't done any water changes. (I do Triton) Tin, I've removed all magnets. Checked all...

www.reef2reef.com

Apparently tin is used in the manufacturer of common plastic.

I am currently waiting for a six package kit of ICP tests to check various plastics in my system. I use plastic tanks, bottles, a gravel siphon and poly tubing to convey water between all. Its hard to know where to start looking.

I wrote BRS and was told they were unaware of tin in plastic.

im losing oral to something and need to figure it out.

 

[s_miles]

This is the post I intended to shar: https://www.reef2reef.com/threads/t...-and-a-very-inert-tubing-that-i-found.793590/

 

[Randy Holmes-Farley Verified Community Expert]

The 15 ppb of tin is not, IMO, likely to be enough to cause a problem, but one cannot know for sure since tin comes in many different chemical forms with different properties. it of leaches out of plastics where it can be added as a heat stabilizer.

I do not know if the magnet is a source of anything.

I'm not sure the chromium is an issue either. Do corals seem OK?

This is from the EPA, although it is fairly old (1980):

https://www.epa.gov/sites/default/files/2018-12/documents/ambient-wqc-chromium.pdf

"For total recoverable hexavalent chromium the criterion to protect saltwater aquatic life as derived using the Guidelines is 18 µg/l as a 24-hour average and the concentration should not exceed 1,260 µg/l at any time. "

 

[Derrick0580]

I just worry because both elements did not show up in my first icp test 8 months ago, and i’ve not changed salt or anything.

 

[thatmanMIKEson]

I just worry because both elements did not show up in my first icp test 8 months ago, and i’ve not changed salt or anything.

IMO without consecutive monthly icp tests containing or with increasing levels of tin or chromium, it may not be a problem. These tests can be inaccurate or show false positives. I would plan on a few tests and that may help to paint a better picture of the system over time. Good luck

 

[Derrick0580]

My plan from now on is quarterly icp tests