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LED and battery tech has come far enough that extremely bright handheld lights run for 2+ hours, which covers the vast majority of dives that most people do, even into basic tech/cave diving. Corded lights add task loading and potential screwups that most people don't want to deal with, and cost...

Nanight makes a very nice handheld light but you will want a different goodman than what comes with it. Dive rite makes good handheld lights. If you plan on ever diving a canister light or if you want to make fundies a bit more challenging, do get a canister light and you will learn how to...

This is why the old version of the lifeline with an actual built in radio was so much better. You could actually call the boat and talk to them.

You might get some anecdotes, a cursory search yields a few relevant medical publications, but unfortunately there just isn't enough research on these things to create definitive evidence-based answers to questions as specific as what the safety margins will be for diving on a specific...

It fundamentally sucks that we don't have a reasonable breakthrough test or reliable CO2 sensing in these machines.

I am an ECCR diver and generally of the school that pre-breathes are of marginal value, unless performed far longer than most divers are willing to do them. Catching a breakthrough is a nice idea but it would take a long time (like 10 minutes +) sitting there drooling into the mouthpiece. That...

DAN is one of the few organizations undertaking and funding dive medicine research, that alone is a good reason to support them. Not sure if DiveAssure does anything like that.

Tracey I'm curious about your actual experience is with the longevity, maintenance, and failure modes of these medical oxygen booster units. Have you had one wear out in any way, and if so what were the symptoms? The manual for the Ultrafill basically says there is no maintenance, but surely a...

@Tracy your wares may be of interest here

I know of another example of a shop buying a T bottle of helium from a reputable big-name supplier and accidentally being given an incorrectly labeled tank filled with Argon. They caught it on the first strange trimix analysis and diagnosed problem because they have their act together and test...

First, carefully arrange the tank so that the bottom faces the direction you want to transport it. Use a small amount of padding to keep it stable, and apply a sledge hammer to the valve as hard as you can. or start diving steel doubles, which makes carrying a single downright pleasurable. or...

If there is ANY doubt, risk, or possible cause for miscommunication I prefer to look at their gauge or show them mine. It's simple enough to do.

Vintage posts only

Steramine is good for sterilization. Simple green works well for oils and grease.

You can buy standard size ceramic razor blades online.

Northern Diver (UK based) makes some awesome relatively inexpensive gloves and offer reinforced / kevlar options but shipping can be expensive to the US.

You could drive a few hours up to NJ or down to NC both of which have world-class wreck diving. But you would want to make it a multiday trip given the drive times and early boat departures.

Ribbon worm, likely Baseodiscus mexicanus. https://en.wikipedia.org/wiki/Baseodiscus_mexicanus https://www.smithsonianmag.com/science-nature/14-fun-facts-about-marine-ribbon-worms-3156969/

https://www.idivenewengland.com/dive-sites/ma https://ecdivers.com/new-england-dive-site-map/

From the tone of this post, it sounds like this was an unplanned engine upgrade? What happened? Those motors are beautiful.