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If you have not yet read the excellent "Deco for Divers" from Marc Powell, it explains the second part of your question ("why do they advocate it") very well, i think. It elaborates pretty extensively the history of development of decompression models till present time, which - again - explains...

THX everybody for all your answers and various opinions. Just FYI, after some thinking i've decided to go for a cheaper un-AI Perdix. The reselling value is not that important for me, coz I do not plan to sell it anytime soon. And I plan to use the difference on unlocking the VPM, plus -...

Wow. This looks like a great piece of information. Now i know better, thanks!

I do deco on most of my dives. Why LP leak is more serious?

Unless I win a serious jackpot or find that uncle who was last seen in Hamburg boarding a boat for South America many yrs ago, I am not going to dive CC in the next few years. :-) Also, 130m rating is also way more than enough for my diving needs. (BTW, it is interesting that the differences in...

I used a Deepblu Cosmiq on a couple of dives as a bottom timer. Everything was fine underwater, cannot complain. (The only detail is that during practising deco, i could not find any timer showing seconds, I had to go by minutes, but after all, this is a rec diving equipment.) When I tried to...

there are more points to consider. first, you are doing a purchase. l8ke w everyth8ng, it is best to try before buy. however, in diving it takes time before the technology differences show and/or pay off. your first dive w bpw will probably be same pathetic experience as your first jacket bcd...

forget the baggy stuff and get wing. somebody threw it on me on my dive #49, and i never looked back through next 300+ dives. as simple as that.

After you are transported by the diveshops vans for two or three times, you will see that Koror is so small that you can walk easily from one end to another within 45min. If it does not rain, of course. :-) And I dont get it when ppl complain about a "walk past a smelly dumpsite." Yes, even in...

It depends what kind of diver you are. If you come from tropics and used to nice visibility - your profile spells Hawaii, the diving will be a shock therapy for you :-) And if you dont dive dry suit yet, you will start :-) Coz no matter if u do a quarry, Baltic sea or pristine Alps lakes, all...

edited .. :-)

Here is some beam comparison of different lights + explanation of lux and lumens: Beam Comparisons for LED Dive Lights - Dive Gear Express

For my tec diving, I want to buy a primary light. I dive both cold and tropical waters, and no caves. I am big fan of LEDs, so it will probably be some LED light, the technology is already mature enough. The remaining question is whether I should buy a canister light or a light w/o canister...

Hi FoxDavis, thx for the reply. I still have one last question. Especially during shore dives, it is often not possible to take fins off first and then start walking just in the shoes, therefor some heavy duty walks over rocks in fins through surf are inevitable. I am usually concerned with...

check this thread: http://www.scubaboard.com/forums/fins-masks-snorkels/401385-anybody-used-carbon-fins-dive-system.html

Everything has been written here .. so i just write this as a greeting from fellow diver who also suffers from being land-locked in Shanghai (which is kinda funny considering there is hardly another 10+M level city with MORE water around than Shanghai :-) If u feel like a beer or coffee with...

I cannot comment on trimix yet :-) But i can comment on depth. For me, depth is a very relative value. (And therefor also when ppl, usually non-divers, ask me "How deep do you dive?", i always answer with, "How fast do u ski?" :-) I personally felt very comfortable on air at many dives at 55m in...

Hi everybody, in a diveshop i found a pair of these Italian fins made from carbon fiber. The fact that they weigh mere 300+ grams really grabbed my attention - my jet fins weigh more than 10 times more ... and the blades even felt quite rigid when being bent - i tried to compare them against...

Thanks everybody for the hints! :-) I quite like the idea of a focus light, preferably attached to the camera and not occupying my hand :-) and especially a one that can be used both for autofocus, as well as for - very (VERY) ocassional - video shot. ("VERY" coz I do not have any intention to...

On a recent dive, my Suunto D4 (in the most conservative setting) mandated 15' deco stop for me, while according to my buddy's computer he was OK to go w/o any deco stop. No problem with that - algorithms vary among computers, and u can even set your comp to more or less aggressive dive profiles...