Hi guys, i want to make a comparison between EQ3/6 and GWB about a simple water-rock reaction on the base of the same thermodynamic database. The final results seem to be alike, but the processes of the reaction have much difference. I guess the algorithms used by these two software cause the situation. A hybrid Newton-Raphson algorithm is employed in EQ3/6 during the reaction. However, i don't find the algorithm that GWB used during reaction. So i am here asking for help. ONE MORE, why can i only start a topic on the student forum?