Chem Marin "Stop Aptasia"

[APISTOBORELLI]

Any one use this stuff before? I've spotted some in my tank and want to get ahead of it before it gets too bad.

 

[besl]

I have used this in the past with general success. I have a polyp now that it hasn't been working on - the stuff i have is a few years old - wondering if there is a shelf life that has past on this.

 

[APISTOBORELLI]

It does say to refrigerate after opening...