Product review (5 stars): 12 Count case works great in Humidifiers in my walk in humidor.
5 Stars all the way.  Product works perfectly.  Helps keep the water crystal clear and keep out the gren algae and hard water stains.  Recieved my 12 bottles just as decribed by the dealer.  Would by again.  Use in the water in a walk in hunidor in all the humidifiers.