Bumby - If you use the same biological media (ie rings, stars, etc) between water changes, and you don't rinse them with tap water, then the water is less likely to cloud up because the good bacteria is already established. Mine is the same, and very rarely clouds up after a full water change
Kiki - My Ralph does something similar. I've seen him go up to the output and sort of hang off it, like he's massaging his undershell
And when Frankie was first in a smaller tank with a waterfall filter, she'd sleep under the waterfall and the bubbles would run up her back.
Lucky turts! It's so expensive for US to get a massage!