TBG, Kuzma uses a silcone, fluid damped isolator in their Reference Turntable to excellent effect. I've not used another fluid (apart from air) system.
"...or you could partially fill the bladders with fluids as Kworks does. Filling the center with sand would also lower the resonant frequency.
"...or you could partially fill the bladders with fluids as Kworks does. Filling the center with sand would also lower the resonant frequency.