velocity correction SPH

Hello Everybody,

Monaghan suggested for the SPH velocity correction an epsilon value of 0.5. If i use that in my code, my fluid behaves like pudding, not like water. It behaves like water when i use 0.001 or something similar. My start conditions are: rho = 1000, smoothing length h = particle spacing dx, sampling neighbours within a radius of 2h. Has anybody an idea? 

Regards,

Frank