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Does anyone sell a low-cost compressor under US$3000 that is designed to be compatible with nitrox air tanks? Yes I have taken the PADI nitrox course. I am aware of the hazards of using a generic compressor and filling system with nitrox rated tanks. I do NOT want to blend oxygen and air at...

Due to COVID-19 it seems I should probably wear my Ocean Reef Neptune full face mask in public without the tank. It would be a heck of a lot more comfortable than a surgical mask or other simple cloth mask. The one-way airflow will keep the inside of the mask cool and free of moisture. However...

If you or your diving buddy have herpes simplex, which involves "cold sores" on the lips, inside the mouth, or the back of the throat, is it possible for this infection to be spread via the regulator mouthpiece? This question also similarly applies to mononucleosis and the various other...

Does anyone make a compressor that is compatible with nitrox tanks but is small, can run from 115/230v or small engine power, and affordable for personal use? The goal here is NOT to do air blending at home, but merely to fill the nitrox tanks with regular atmospheric air when it is not...

I am fairly certain this does not exist. Someone please make it and I will buy it. I am looking for a way to brightly illuminate, but which does not put all the LEDs into a single tight bunch, but rather distributes them along a long narrow band about 2 meters wide. There's no need to blind...

I need a detached drysuit hood that has a smooth watertight sealing surface on the inside of the face opening to seal against my face, and also a second smooth watertight sealing surface on the outside of the face opening to seal against the mask skirt. The generic type of detached neoprene...

What is the correct tool to remove the insert from a Faber blue steel 10120 convertible valve? The insert has a really strange tool hole where it is not perfectly flat sided like hex but also not deeply lobed like torx. 6mm hex fits pretty well, but also so does torx T40. Obviously I do not...

So I just recently got my PAID drysuit training, and I notice a problem with the DUI suits plus a Weezle. When you get in the water at the surface, you put your arms down with your left shoulder at the highest point, to vent the air out the drysuit exhaust valve. Once properly weighted, you...

I notice after a while that the noise of the bubbles sort of becomes annoying. There is a low frequency rumble that I can't tell where it is coming from, though I assume it is the fast-flowing bubbles streaming up from the regulator exhaust ports, past my ears on their way to the surface. Aside...

When changing tanks between dives with wet gear, do the small amounts of water dripping into the 1st stage tank air port, and pushed in during each dive, eventually cause internal corrosion damage to the SPG or air integrated pressure sensor?

Is there a standard way to describe computers that use a wireless transmitter vs those with a pressure hose that goes into the computer? Seems like these two categories get lumped together in stores. And besides "wireless" is sort of a weird name for them, because as far as I know there is not...

Is there a source for wetsuits for those who are not perfectly athletic specimens of muscular fitness? Seems like most wetsuits are size for the thin and trim. An "extra extra large" wetsuit does not necessarily have more girth around the belly. Instead it is sized for an elite athletic person...

I am coming more and more to the conclusion that buoyancy management for new divers like myself is being taught completely wrong, which is probably why it is so difficult for new divers to figure out. If as a new diver you feel bad because you cannot remain perfectly still above the sea floor...

Is there some reason generic recreational scuba diving has standardized on a valve-up position for air cylinders, with hoses sticking out all over the place on the 1st stage? It's just easiest to do things that way? Valve up seems to be a lousy way to do things if you are at risk of snagging...

Due to the occasional apparent confusion about which way to turn tank air valves to open them, and the possibility of air being turned off by inept dive boat crew, etc, why isn't there some universal labeling standard to show which way to turn a valve on? It would seem relatively simple to have...

DUI - Diving Unlimited International CF - (crushed neoprene)... "Crushed Foam" maybe? FLX - (trilaminate polyester/butyl rubber/polyester)... ?? TLS - (trilaminate nylon/butyl rubber/nylon)... "Tri Laminate Sandwich" ?? CLX - (trilaminate cordura/butyl rubber/polyester)... ?? CXO - Contaminated...

When using a snorkel or a regulator, my mouth and throat slowly dry out over about 15 minutes. With the mouthpiece jammed in my mouth, it is hard for me to do normal methods to remoisturize my mouth / throat with saliva. I find I need to take the mouthpiece out, and then spend a few seconds...

(Don't know where to post this.) I am a relatively new diver, that went on a night dive with a group of people who are much more experienced, which I screwed up and had to bail out, inland diving up north in a quarry with very cold thermocline. I had two lights, a 1000 lumen LED spotlight...

Is there a hand signal for Acknowledge that does not also try to indicate "I'm okay"? The Okay symbol to me seems like the wrong response to another diver that is in trouble. Diver 1: Hand signal for Something's Wrong / signal for Up. Diver 2: Hand signal for "I'm Okay" Diver 1: ??? It's great...

So I was wondering just what the actual bottom times are in water more shallow than the 35 ft PADI RDP table minimum. It occurs to me that the table data can simply be entered into a spreadsheet, and then we can extrapolate the resulting curves to see what the pressure groups actually are. So...