Many a reefer have had their tanks on carpet, including myself.
It's not my preference, but I would not let it stop me.
A properly designed tank should have no issues, perhaps lay something down when doing WC's and maintenance.
I have not seen the red sea's but some people rave about them.
Don't forget SCA for anything 180g and below, they make a nice tank too and custom overflows, great CS, somewhat local(Rancho cucamunga I think?)
There's a fine line between owning your tank, and having your tank own you!_________________________________________
120G SCA starfire, tunze 1073.02 return pump, Geisemann reflexx 4xT5, 2x panorama pro LED strips, 2x Vortech MP 20's, 40g sump w/ fuge.