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Cressi Edy has been very good to me. I'm probably going to buy another one. I used it for recreational diving for about 40-50 dives. I absolutely have no complaints at all. I used it in freediving as well. I chose Edy because of it's freediving/gauge/dive modes up to 200 meters. Also to be...

I have a Cressi edy wrist computer. This has standard wrist watch band. I would like to take the original band out and use bungee with it somehow. Basically it's the same task as taking a standard wrist watch and mounting it with bungee. Unfortunately, I would like to keep the watch open...

I've mounted an analog gauge that didn't fit on dss boots. I purchased the same wrist thing in the OP's picture. Then I cut the bottom of it and drilled holes on the sides for the bungee. (Because the original wirst mount was too thick.) Unfortunately, I can't post the pic since I lost it. This...

It's because DM (in my case) training is focused on teaching students. Unfortunately almost all of those 20 skills are performed on your knees in the pool. Still these skills improve certain aspects of diving with focus on teaching in a confined environment. I don't agree with OP's "diving...

AFAIK, it is supposed to be at the left of the buckle, but during the dive, it needs to be at the center. Then you can reach it with both hands easily.

So can we conclude that if the lungs are above the second stage (eg. upside down) then there would be no lung volume decrease?

I don't know if it says 'tidal', but dead-air space is being discussed at the same section. I would assume that it would be talking about tidal volume. It says 'we need to breath slow and deep since there's more dead-air space, more gas resistance due to increased gas density and there's less...

From PADI's encyclopedia of recreational diving, a diver's lung volume decreases by 15-20 percent (more when vertical) due to water pressure on thorax. I do understand why lung volume would be reduced when a diver is vertical since regulator second stage will provide x ATM (ambient pressure)...

Just an example of a first stage issue: my brand new regulator first stage needed a tune up after only 5 months of diving. The LDS told me that the first stage pressure (to intermediate pressure area) was close to being too high which would cause second stage to freeflow.

Not only is his head not up, but also he's dropping his knees in the second link. I'm having some trouble with backkicks as well. Having some trouble with my trim (my legs are too high) and I also need to slow down and feel the glide as this is not a power kick.

Thanks everybody..

If I pass DIRF with singles, and if I want to take Tech 1 in the future, then do I take DIRF again to get a tech pass? ( I guess H/Y on a single tank would make sense if somebody wants to maintain only 1 pair of regulators to be used on both for singles and doubles. Right? )

Do I need H or Y valve for single tank for Fundies class? It says so on GUE web site.

Well, neck seal and the front seal in polar are so different. I have a pinnacle elite 7/5mm. (water is 52-70F here) I get tons of water through the back of the neck/zipper area. (It sucks really bad since this size fit is too loose for me and it retains all this water in.) If you are diving in...

I was a member of a prominent mountaineering club back in the days. I can tell you that you can get yourself in serious trouble in that sport if you have the ideas you wrote above. In fact, to break this behavior, in one of the trainings, we used to take the students very close to the peak and...

Very cool... See you in class...

It's in San Diego. I think it'll be La Jolla shores.

I'm taking the GUE-DIRF class on Oct19'th!!! I'm very excited...

Thanks everybody.

I'm a beginner diver (60-70 dives, PADI rescue) and I'm trying to follow/learn DIR principles. I'm trying to learn as much as possible via internet, GUE online resources/books. My instructor is also familiar with DIR and she's been helping me a lot. I'm planning to take a GUE-DIRF class in...