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I'm aware GUE teaches 30/30 and not 25/25. Is that what we are turning this thread into? There are plenty of other threads that argue 30/30 vs 25/25. UTD uses 25/25 because they believe in the research I mentioned. It's fine if you don't believe that though, everyone has their opinions...

I'm sorry you can't understand what I'm saying, I tried to make it as clear as I could. The results of the studies you linked were inconclusive, and are also mad science and by the same logic can be ignored. There is a discussion on that site, sure, similar to the one we are having. People...

The reason I was bringing up Meyer-Overton is because it makes use of gas solubilities. Helium is indeed less soluble, we can agree on that. What we are at odds with is how Helium reacts in dissolved gas theory. When descending, or more appropriately, when there is a pressure gradient setup...

It's faster to move in and out of the tissue but doesn't dissolve nearly as much based on the solubility indexes mentioned in the Meyer-Overton rule. How exactly is it wreckless to treat 25/25 the same as 32/00 for NDL? Attacking UTD and not giving a good explanation doesn't really help...

Sorry if I made it seem like we should ignore it all together, that's certainly not what I meant. We should account for it but not to the extent we do with Nitrogen. Ignoring it all together is what the EAD would give you. Helium of course isn't completely insoluble but it's very much less...

Your instructor is right. Most Buhlmann-based planners penalize you for using Helium because Buhlmann's studies did not actually use any Helium, he died before it was considered in diving. His model uses Graham's law to describe solubility of a particular gas in a tissue. If you follow this...

I've changed min gas/rock bottom on the fly from relief on a wreck before but looking back on it it's sort of questionable. Since the calculation is to deal with an emergency, what if that emergency occurs at a lower depth than you're hanging out at (wing failure, etc.) that would cause you to...

No sorry, I've updated the title.

Hi Sinbad, I'm a UTD student and recently signed up for the new Tech 1 class with Jonatahan Edwardsen from Submerged. From what I understand, the new Tech 1 class is similar to the old Tech 1 & 2 classes combined, and the new "Techreational" class is similar to the old Tech 1 class. I don't...

So I sent an email to the one you provided 9 days ago describing the issue and have not received a response.

Thanks. I'll shoot an email over. I did charge it. When I rotate the unit just right the display will kick on but it just turns back off the moment I move it, perhaps the battery is loose?

Hello, I sent a question a couple of weeks ago regarding my cootwo using the only contact option available from your website here: DiveNav , but I never received a response. I'm fairly certain I need to send my unit in for repair; it's not turning on anymore. Is there someone I can talk to...

This item is now on eBay: Oceanic OCI Silver/Black

Hello, I'm selling my Oceanic OCI with transmitter. It's a great computer but the I ended up with a Shearwater Perdix because it fits the type of diving I'm doing more. I've only dove with it 33 times and recently had the battery replaced about 2 months ago. It's still under warranty until...

I did try pushing the reds put it ended up looking to fake, maybe I'm just not that great with the channel mixer :P. Thanks for suggestion, I'll forget the fact that I forgot my filters!

Good observation, it's because I forgot my filter pack and shot all of the footage without a filter. I had to remove a lot of the green channel to get footage that looked somewhat normal in color, and in doing so lost a lot of the green channel. The red and blue channels didn't have much data...

Hi everyone, I just got back from a trip to the Caymans with my LDS. This is my second diving video, hope you enjoy and I appreciate any feedback :)

Thanks. Also I've had the pleasure of working with two different UTD instructors so far (Brady Fuchs in San Diego & Ryan Custureri in Florida), and both have been nothing but excellent and professional. Both take my training just as serious as I do, I can't say enough nice things about them...

I have the regular version. My forehead sticks out a bit but I don't have a normal size head. It seems like if the skirt was a little tougher it wouldn't cave in as much and that ridge wouldn't push up against my forehead.

Hi there, I have an Atomic Sub-Frame mask which I liked at first because it sealed well on my face. After wearing the mask for about 45 min, I noticed there is a ridge on the skirt that presses right between my eyes. At depth this is fairly pronounced, and after three 45-min dives in one day...