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Self buil hookah, solo diving, and hookah itself isn't really what we call "safe"
you said you are interested in a safe activity. So take a dive course and learn it the right way. And buy quality equipment.
Build it/use it.....There's lots of us out there!...These Guys are no fun at Partys..Well first off thank you for all the replies. The reason I was going to Hookah type was I thought it would cost me less. AS far as the certification I was going to get that in Palau once I got there. After a lot more research I find that it does not cost that much to rent a scuba system. The second part is how I started in all this is I watch sailing channels and I like the fact that they freedive for fish and lobster. As I can hold my breath for a total of 30 sec it really would be hard for me to do. The next best thing I thought would be the hookah system. I think I am going to hold off and rent for a while first then decide. As far as building a system I have knowledge in water treatment (building ozone generators and such. fully capable of building a comparable safe system that is on par if not better than a certified one.
Again thanks for the input. Maybe I'll get lucky and find a good used one in Palau that someone does not want to haul home.
BS.................Please be sure to fill out an organ donor card and living will prior to your endeavors. It could be very dangerous activity with do it yourself gear.