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In the group that I travel with I'm the only diver. We go to all inclusives. I usually book diving off site. Two years ago I didn't do that.....what a mistake!!! So we're on the dive boat, and they break us up into two groups experienced and newbies. To make a long story short, they stuck me in...

Can I ask what benefit a HRM is:confused: John

Valve looks like the one from the OMS (faber) 8 cft. argon tank. Won't fit anything else. John

I hit one years and years ago on Cedral. Only one ever experienced. Been there 8 or 9 times John

Why tell 'em? Research it on your own and make an INFORMED decision on what you should do. I shattered my femur in '95, threw bilateral pulmonary emboli. I was on coumadin for 6 months after. Had a trip scheduled in about 4 months, called DAN they said to not dive until after coumadin completed...

Jesus Christ................another f*&ken course that covers stuff that should have been included with basic training. What's next..... a course on which bootie you put on first? :shakehead: John

OK got it now! John

I put in a NOT SURE. My first course was 17 yrsa ago. Hard to remember if I had it in the course or learned some of it after (sucks to get old!). Also I'm not sure what point he's trying to make in the last paragraph of the article. Later, John

Commenting on the posts about instructor not teaching certain things about rebreathers. (I'm not an instructor). In a week course one couldn't possibly teach everything you need to know about RB(s). Also some students would grasp a certain concept quickly, but other concepts more slowly. They're...

The greatest risk is the operator. Complacency is the main cause. As long as you remember that the RB is trying to kill you, and you have to be on the lookout constantly you will be alright. I was recently diving on a mixed boat, as I was setting up my RB, I was answering question about the RB...

When diving open circuit I always dive with the 7 ft PRIMARY/DONATE hose as shown. Started back in '98 with dbls, made sense, so also incorporated it for single tanks. Later, John

I've used the US4's for years. As tbone said, just be sure to rinse. I use a 20 cc syringe to flush them out. Later, John

I agree with Clark Fletcher. Esp. his second paragraph. As far as running most of it yourself.....have you ever worked at a dive shop? If/when I retire I wouldn't want to be working that hard. Just doing the management would be OK, but not all the other stuff. (or even 1/2 of the other...

I'm familiar with that document. Maybe I missed it somewhere (eyes are getting bad) but I don't recall seeing anywhere where it said that sealing it off makes it last longer. Just that low humidity tends to dry them out quicker. One would think that if sealing it off works, then the...

Also on the sealed package there is a use by date..............why is that there? John

First the life stated is for the cell in air...........OF COURSE exposing it to higher PO2's will shorten it's life. BUT nothing will lengthen it's life, or prevent it from dying at whenever the company says is its life (+or-). Lowvis: If what your saying is that removing the O2 stops the...

The point that I was making was that nothing you do will make a cell last longer. They die when they are ready. Rebreather divers discovered this about 30 yrs ago. Every possible "trick" has been tried, none work. John

Ok here's the truth.............without the plug it will last 365 days........with the plug it will last 52 weeks. Keep it in the fridge it will last 12 months.....etc.........get the picture:wink: John

I have piezo's in both my HammerHead controller and Shearwater computer. Neither one requires "HARD" tapping, just a gentle squeeze. Are you thinking about the switches used in the Liquidvisions? Those were accelerometers, and I agree, the ones I saw did need a good knock. Later, John

This only works for women................first take off your bathing suit.......................... Later, John