Hooka Diving

[mattd]

When you are working, you will use air up quicker, but you'll learn to use less air with experience.  There are bigger tanks available too.  I use a HP100 and I know singles go up to at least 130.  I am in that process of learning to control my breathing rate now.  I used to use double my wife and now I am about 20-30% more so I'm doing better.

Tanks need a visual inspection every year but don't need to be tested but every 5 years.  IMHO, testing isn't a big deal.

Your wife doesn't need to dive.  You'll be at the same risk alone under the boat on a hooka or a tank so there isn't a difference there.  With scuba, you can always join a dive boat and go out for some diving in interesting ports while your wife gets a massage.