Bio Spira Vs Tetra safestart
okay I am confused here, I read that bio spira works great, but is not made anymore and was replaced by tetra safestart (I have read mostly good but some mixed reviews)
at the LFS near me they have actual bio spira for freshwater tanks... so they say (talked on the phone haven't seen it yet)
I am confused, are they still making it? if not, would this stuff just be old bio spira? does it go bad??