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Dr. Deco, the topics of PP02, PPN2, Oxygen Toxicity and Nitrogen narcosis have been well discussed in my training... however as I look to varied types of trimix, I have questions on the inert "filler" gas's impact on the body at depth. Are there any appreciable limits of Helium exposure on...

Just wanted to give some feedback on Conch Republic Divers in Tavernier (IslaMorada). Gary and Brenda are lovely warm people, they invited all divers down for Thanksgiving to their home for a Turkey feast.. lots of great conversation and laughs. The Diving at Islamorada was great, Avg...

Hi all, I am interested to know how difficult it is to take a standard recreational reg that has a 40% 02 limit, and turn it into an O2 clean reg? The reason I ask is that I'm going to purchase a deco/stage bottle and would like to know if I need to spend the extra money on a 02 clean reg...

I'm planning to Take my Adv. Nitrox and Deco procedure courses (TDI/STI and IANTD) next month and was wondering what equipment it would make sense to purchase vs rent. I have a technical single tank BP/W setup, with a MK25/S600, and will typically be traveling to dive. I'm not sure how...

Hey Nick, I can't find shoe-size ranges published for the Hollis Fins. I'm a size 9 US / 43 EU interested in picking up a pair. I typicaly wear soft-soled booties in 5mm neoprene. Any suggestions? Cheers, David

Alrighty folks, I've made the switch after seeing the light. After about 100 dives on a rear inflate ScubaPro BC, I've sold it and gotten a BP/W from Tobin at DSS. The main reason I'm switching is that I've learned to be efficient, and want a more streamlined system, that is also modular...

I recently purchased the Sherwood Gemini inflator for my BC. I like the product, find the resistance of the inflator button to be really good for getting dialed in. Interestingly, the large connector is pretty heavy, and throws my trim out (I'm listing to the left). It became necessary to try...

I'm in St. Kitts now, enjoying the sun and scuba. here's some info for people who wish to come to S.K. and Nevis. I've enjoyed my time with Austin of Pro-Divers. He's the owner, and has been an instructor for 27 years. Austin takes a personal approach and makes sure you're enjoying...

Just wanted to share my joy and excitement at my new arrival... a 5mm Lynx wetsuit from Waterproof of Sweden. What I like... Zip wrists and ankles Plush interior - easy to don and doff Gusseted neck front zip - nice for SI Ergonomic pre-bent knees and ankles It's an expensive suit...

I'm new to DIR, but am very interested in clean and well-tested methods. I've just ordered a Freedom Plate with Hog harness and am interested to find options for weighting that align with DIR standards. Here are some stats to help people... I'm 5'10" 190 lb. With an AL 80 and a 3mm Full...

I'm interested in pursuing Advanced Nitrox, Deco Procedures, and possibly Trimix this year. The price of certs from IANTD differ significantly from those from TDI taught by the same instructors. Can anyone shed light on why? Additionally, can anyone offer suggestions as to which one I should...

Can the hoses for Atomic, Apollo, and Oceanic regs, that have the Swivel/ball joint in them be used with Scubapro regs? I have a MK25/S600 and would like to know if this is an option to relieve some tension at my jaw. Thanks, Dave

Does anyone have experience with the MK25/S600 combination in water at or below freezing? I have the newest version which comes with the TIS (Thermal Insulation System). There have been many prior posts about McMurdo testing, but those were in 2005 and 2006. I haven't seen anything with the...

I'm looking for buddies and friends on Grand Cayman from Dec 22 - Jan 6. PM me if you'll be on island. Thanks, David

I'll be on GC from Dec 22-Jan 6th, looking for dive buddies and friends. please PM me if you'll be on island. Thanks, David

I'm a fairly new diver, and am involved in lots of other sports where we carry our hydration packs with us and drink as needed. Do the same options exist for a warm water rec diver? What products would you suggest? Thanks, David

Dr. Deco, I've been on Uraxatrol (Alfusozin HCL) for 3 years for BPH. I am in reasonable health and exercise 3 days a week. I started diving last month, and had no difficulty in the exertion level. On one occasion, after 4 dives in one day [all of which were in profile], I was a bit light...

OK folks, since a few recent threads have panned the attempted "innovations" from Mares and Sea Quest (HUB system, and i3 system)... what do you suggest the companies do to improve BC's and how should they execute those improvements? I learned on a standard reg setup, and simple jacket style...

Hey all, I'll be on GC from Dec 22 - Jan 6th, hoping to meet up with some SB folks and find buddies for shore dives. If anyone will be there at the same time, please PM me. Thanks! David

Warranty obligations and authorized vs. unauthorized dealers has been a long standing legal discussion which has become more pressing recently given internet stores that have minimal costs and inventory (they often drop ship). The point of authorized dealer networks is to ensure that the...