Noone has experienced 'zero gravity'

Gravity on a Space Station is roughly 90% of what it is on the Earth's surface, a far cry from 0! You and the Space Station are continuously falling together. Your sideways velocity is so high that you fall just as fast as the Earth curves with gravity always pulling sideways relative to your velocity. So in actuality astronauts have experienced perpetual falling without hitting the ground, not zero g.

You can't feel gravity directly, though you can feel it indirectly. such as your feet pushing against the Earth's surface as gravity tries to accelerate your body.

Calibrate faucet valves

Usually max fluid flow is achieve by say just a quarter or a half turn of the knob, opening the rest of the way does nothing. Typically with hot and cold valves opened to max. slowly closing cold to warm it up does nothing until you reach a certain threshold.

Properly calibrated would mean:
1/4 turn of the knob = 1/4 max fluid flow
1/2 turn of the knob = 1/2 max fluid flow
full turn of the knob = full max fluid flow

This will also give you more fine tuned control over the flow.