Yeah Evil that is the company but the phamflet claims it consists of live naturally occuring nitrifying and spore-forming bacteria, clears green water,non toxic and not a chemical.
I do not know what geo liquid is Frenchy but this stuff is a clear liquid.
I have been told that Rotorua council have trialled it and are going to put it into the lake.(don't know if that is true) might keep an eye on this one.