Zinc in RO/DI water

[Randy Holmes-Farley Verified Community Expert]

You're welcome.

Happy reefing. :)

 

[tastyfish]

Worth considering for a zinc source. I believe you have more Zinc based PVC stabiliser use in the US vs europe (seems to be tin over here): http://www.pvc.org/en/p/calcium-zinc-stabilisers

 

[Victoria M]

What??? I never even considered that?

 

[Randy Holmes-Farley Verified Community Expert]

PVC and float glass (it is floated on molten tin) both are possible non-metal sources.

The joys of chemistry. :D

 

[NY_Caveman]

Yeah it is a bit needle in the haystack and no way to easily test except for more ICP-OES tests. I am not too worried from what you are writing. Thanks Randy!

 

[Randy Holmes-Farley Verified Community Expert]

You're welcome.

Happy Reefing. :)

 

[dantimdad]

Hose clamp?

Have a customer that had some kill everything in a tank.

Also, if you have children, look for a penny. They are made mostly of zinc.

 

[NY_Caveman]

I have kids, but no pennies. I have not found anything and tank is a new setup, 2.5 months in. I have a 3D printed probe holder whose magnet is probably the most likely culprit if it is a magnet leaching. I raised it above the water line (it had been submerged) and the probes are still deep enough.

 

[tastyfish]

I have kids, but no pennies.

Aint that the truth! lol

 

[zalick]

I have kids, but no pennies. I have not found anything and tank is a new setup, 2.5 months in. I have a 3D printed probe holder whose magnet is probably the most likely culprit if it is a magnet leaching. I raised it above the water line (it had been submerged) and the probes are still deep enough.

Did you ever figure this zinc issue out? My ICP test just came back with 14.63 zinc. There is no PVC after the RO unit and nothing metal in not touching my poly storage container.