I soak my regs for a few hours (sometimes overnight) in water that starts out warm, if only because there's more water pressure with both cold and hot going at the same time.
I leave the rest of my gear in a tub for an hour or so, also in warm water (for the same reason), before taking everything out to dry.
I leave the rest of my gear in a tub for an hour or so, also in warm water (for the same reason), before taking everything out to dry.