that is the exact same stuff, I like the liquid
And it should be added ONLY 1x ever 10 to 14 days. just like any other preventative med, it can be gotten used to. I will however use it daily for 2 weeks, if I suspect a problem or add new fish, then will taper off til i again get to 1 x every 2 weeks. At that rate, a bottle of 2 ozs will last most tanks over a year, ours is going on 16 months.