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Heh, let me count the ways.... So called CO2 headaches attributed to "skipbreathing" could be psychosomatic in origin. Otherwise, suspecting organic causes one should look for any of multiple origins such as sudden warming of the noggin or side effect from medications and additives. Nitrates...

Swoodly, the S600 differs from the sister S550 in that the more expensive S600 incorporates a breathing control knob and "anti set". This knob adjusts the spring tension on the downstream poppet valve to provide for easier or "hard" breathing. This feature is sometimes useful but not necessary...

Yes, I've been in Lynnhaven Dive Center. They're on Great Neck Road. My daughter is going to college in Charleston--- small world, heh. Some of the older regs had long term reliability problems with HP. It usually involved the HP valve seat. USD(aqualung) was one of them but they upgraded...

Yeah, I know that tank, a real monster, and looks ideal for drysuits. Faber got real creative when they DOT rated that tank at 5 psi below the 3500 cutoff for DIN. It has a 3/4" neck which means that it will accept standard or DIN style valves. Typical Faber, I bet it could be filled to 4000 psi...

"Sea Vision" specializes in mask exotic lenses. Their flagship product is a pink tinted glass which is advertised as having color correction features. Evidently, this works well in shallow to medium depths. When I dealt with them some 8 years ago they were doing custom work such as supplying...

Trigger, your TX 20 is an "entry level" regulator. This does not imply that there is any missing quality or air delivery performance. It has typical Apeks quality and includes a sophisticated balanced demand valve with flow control vane or "Venturi". Apeks saved a few bucks on production cost by...

Nightraven, there are no special diving related issues with carbonated drinks except those common to all acidic foods; the problem is acid reflux which is more serious than it sounds. Underwater, the combination of gas and acid can be driven into the throat causing a spasm and making breathing...

Unfortunately, a practical wide view mask has illuded me also. For a snorkel diver, "practical" means low displacement as well as wide view and good seal. In the 1960's, USD made a large, wide view mask with warped glass, the "panorama". The lense was single pane and looked like a car...

Twins, sounds like a really NICE setup.

In some situations, such as swimming against a current, you will save air by adopting a pair of splitfins. Use common sense, don't try to swim with a found anchor or porthole. Use a liftbag or buoy. You will burn less air in clear water. After you gain experience the difference will...

The Value Added Tax can be refunded to foreigners but you have to fill out a form. In due time, you will get a refund.

I bought 3 steel tanks in 1977. They were rated 94.6 cf at 3000+. Overall, the same size as the old 72's but were negatively buoyant. Twenty years later, one failed hydro and it was sent to PST for evaluation. They lost it and eventually sent me a new 100 cf HP, free.

I like my Scubapro G250HP, but if you want to go with Apeks consider the TX50. This setup is very close to the SP model mentioned above. It can be had for less money and is just as good. Don't be overly concerned about first stage design as this is a locus of never ending debate among techies...

The "escape" has bulky side saddles and a cumberbun. Check out the SCOUT. It is single tank, back inflated, weight pockets and is secured with a belt. Costs much less. Easy to pack. Has 35 pounds buoyancy. Capable with or without a wetsuit.

Many divers say that about the basic gear. Of all the gear you will ever buy, the mask is the most important. If you threw away everything, EVERYTHING except the mask, you could still dive. That is by way of highlighting the importance of getting the widest view, best fit and lowest displacement...

The SP S600 and G250HP have an auto anti set feature. I assume this takes the tension off the 2nd stg poppet. The earlier G250HP's had a manual anti set. My 250HP is two years old, but new to me when I bought it on EBay. While in my diving locker I inspected it, hooked it up and inhaled on the...

Suggest you get a wet suit with attached hood. The Ranger will be a tight fit in any normal sized gear bag, not so great for traveling. However, if you are a big guy and use double tanks it seems a good choice. The Zeagle Scout is really slick, compact, simple, has single bag construction...

We're always hearing about LP and HP but what about the forgotten 3000 psi steel tank? Does anyone use them? Scubapro sells a smallish, steel, Faber 3000 psi bottle with 72 cf capacity. I've always regarded these 72's as having a good, balanced design but wondered if other, larger capacity...

The old SP MKV was just about bulletproof and they breathed about as well as anything today unless you go super deep. Any of those old metal regs would last just about forever, particularly if they were lightly greased and retrofitted with the latest high tech O rings. One of the nostalgic...

I read the three links. The following disclaimer by "pro planner" caught my attention: >>>No 'yo-yo' dive profiles. Recent research indicates that these exaggerated profiles may lead to type 2 DCI even when the diver is inside the no stop times on the tables<<<< Should have read...