[gmx-users] Help with apolar solvent box

[Ragnarok sdf]

Hello, I would like to know if there is any recommendation onto
setting up a system with a protein in a apolar solvent box. If there
is any tutorial or web page with topologies for solvents. I read that
the decane box that comes with gromacs is not to be used for
simulations, if that is true, then how should I assemble my system?

Thank you
Fabrício Bracht