[donmoore]

Jome,
I read a post of yours where you were thinking of it too. I also read where people do the very same method you mentioned of boiling water and adding salt for sinus washes. A 0.9% formula is 1 tsp of salt to 2 cups of water. They also recommend using non- iodized salt which as you know, most table salt is. Canning salt apparently is not iodized. I don’t know about Finland, but here all salt and most foods have to say what is in them so its easy to know if the salt is iodized.

I was thinking of washing out my mask next time with alcohol or something before hand.

Watts,
Some good ideas. I kept them flooded for about 15 minutes before trying to get it out. The fluid stayed in place with no effort until I opened my eustachian tubes. In fact I could even breath through my nose. The first time I opened them I was not in front of the mirror and all this fluid came running out. I wasn’t sure what happened but I had to grab a towel fast to keep from soaking myself and the floor. Then I went in front of the mirror.

After further research, although the eustachian tubes drain down when inverted, it appears they only slightly drain down. So I am not sure a straight inverted position is best for filling them. It might be easier and work better to just lay back. Like wise when draining it out, it looks like a slight head tilt forward would be the best.

I don’t know if it would ever be easy enough for recreational diving, but the most interesting thing to me is to-date is that it can be done on the surface with much cleaner water than ocean water and you can use a normal mask and dive with air in it. In fact a person probably could have gotten away with it in a meet before AIDA even changed the rules last year.

The only thing I left out in the procedure is I had to first break the seal at the top of the mask after each cycle to let air in to remove the vacuum.

I think the thing about not pushing too hard to fill the middle ears is important. With the Frenzel you can generate a large amount of pressure. With air it compresses some, but with fluid you can probably really push the ear drum out.
don