Shelf life ?

[BUBBA9459]

I have several unopened bottles of ESV, Magnesium, Strontium, and Iodine.


They are from 1997

Do these chemicals have a shelf life ?

I'm not trying to be cheap, just curious if they are still safe to use.

Thanks

 

[Randy Holmes-Farley]

The magnesium and strontium are fine. The iodine may have oxidized to iodate or I2. That might still be Ok, but it wouldn't be my preference.

 

[BUBBA9459]

Ok,

Thank You

 

[Randy Holmes-Farley]

You're welcome.

Happy Reefing.