I called a local Petco (San Dimas) and they told me they dont have it.
From the sticker on the shelf on the OP pic, looks like it could be an older item. Dated 01/01/00.
Dalton, when you open it, let us know if its a giant block of salt or not.
SantaMonica got me thinking about chaeto loosing filtering properties if it gets thick.
What if this type of reactor combined with a mesh screen like a ATS? Have the mesh sit inside the reactor in a cyclinder shape.
That way GHA can attach and can be used instead of chaeto.
Sent from my...