Hetland
Contributor
The advice for preventing external ear infections is excellent.
However, I'm pretty convinced that the vast majority of people who think they have water in their ears are actually perceiving the fluid that's accumulate in their middle ear as a result of barotrauma. When you descend and the pressure in the fluid part of your body goes up, and you don't equalize quickly enough, that pressure pushes fluid out of the blood vessels and into the air space in the middle ear. This gives you a sensation of fullness, and sometimes crackling or bubbling sounds can be heard.
Many divers don't equalize enough -- They wait until they feel discomfort in the ears before they do it. That may be long enough to cause a little damage, and as the days goes on and this accumulates, they become more and more symptomatic.
Try equalizing earlier and more often, and see if that makes a difference in your experience.
I think this just happened to me. No ringing, buzzing, dizziness or hearing loss, just "full" feeling ears, and some popping when I blow my nose. I know it's not water, it's something else, and I believe you called it right.
Other than prevention, what can be done about this? Is there any treatment once this does happen?
-h