Question about Coral Vital

[clownfish45]

I have a bottle of this stuff called coral vital. I have had it for a wile and I have never used it since I bought it a few years ago. I'm woundering if I can still use it or do I need to toss it? I want to use it in my 12 gal nano.

 

[Rockitmakr]

Toss it IMO. Mark Weiss products are junk.
:beer:

 

[PSam]

Ssssssnake oil. Trash it.