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I think this is the general consensus. Independent doubles really seems like an artifact of history. I’m not killing OP for the path he’s taking: I think independent doubles can be done safely. I just think that it adds a great deal of complexity and difficulty: the ‘do we or don’t we’...

I use a very similar style of bands for independent doubles. I used a single tank adapter instead of those plastic pieces, but the configuration is largely the same. I found it reasonably – but not completely – stable. There is definitely a lot more wiggle than there is with a pair of steel...

Fine, I’ll be the counter argument: I wash my wetsuit in the washing machine. NOTE: Front load, not top load: top loads with an agitator absolutely destroy everything that’s put into them. Front load are quite gentle. Top load without agitator, I can’t say. I do this probably every three...

I’m not familiar with the products you’re talking about, but I can say this: in the 1970s, scuba tank manufacturers experimented with liners. They were singularly bad ideas, they quit using them, and today tanks that have the linings are pretty much reviled (hated). If people don’t just...

From @tursiops perspective, there is absolutely *no* difference. And the misunderstanding between the two of you highlights a very big hole in many divers’ training and perspective, often through no fault of their own. For open water divers, no real mention of the contents of their tanks is...

https://scubaboard.com/community/threads/dryfob-xl-affordable-canister-for-plb.622985/ I don’t really have much to add to the review. I mean, it certainly long enough with pictures and everything… :-) And I use it as others have described: on my right waist strap, right next to my light...

It’s very difficult to know, what with variations in sizing as well as variations in size of the boot you’ll be wearing. When I upgraded from 5 mm soft sole neoprene boots to 6.5 mm semi-rigid sole neoprene boots I had to go up in size. Same thing when I upgraded to converse All-Star boots for...

So these were originally designed as SCBA cylinders? I had looked as closely as I could at the valve opening. It looked similar to but not the same as a typical yolk fitting, and it looked much closer to what I thought an SCBA connector looked like. But like I said my original post, all of...

I am far from an expert, but I’m pretty sure those are not SCUBA tanks. I can be fairly confident in saying those are not DOT 3AA tanks, nor are they DOT 3AL tanks (or any of the modern special permit tanks). Which means for all practical purposes in modern usage, those are not SCUBA tanks. I...

No, I would be willing to put real money behind the opinion that most people are upsizing because “bigger is better“ or fear, uncertainty and doubt. And if you only need a few feet of pipe, who the heck cares? It’s like pennies per dollar that you already spent on the compressor, so why not...

Well, then, my work here is done. :-) I think us “shade tree“ compressor owners tend to be a lot pickier than commercial applications. I think we tend to obsess a lot more and overdo things. For example, here’s a link to a document that outlines pipe lengths for compressors of different...

Any suggestions on what we should be targeting for back pressure? I just rebuilt my trimix stick. For my 6 CFM compressor I’m using approximately 6 feet of 2 inch PVC with the following layout: 02 injection, then approximately 24 inches of bio balls, then O2 sensor, then helium injection, then...

FTFY… :) I figured this too. Not archaeologists per se, but a person in a new environment thinking about their desires and inherent assumptions masked as needs, and assuming they have the best handle on the balance of factors of their ‘highly unique’ ‘requirements’ ‘necessary’ for success...

What can I say. I’ve used XStream seconds and Jetstream seconds. Multiple dives each time I’ve tried, and I’ve tried multiple times with each design. I dive them with a long hose, without a 90* elbow. When I do so in horizontal trim, I get bubbles across my line of sight and they get caught...

Servicing them is quite different from traditional regulators, both first stage and especially second stage. I don’t remember off the top of my head for the XStream,but it’s not unusual for Poseidons to need unique/custom tools to service. So know that if you buy these and expect to service...

I had the same experience. I just recently got a Waterproof 5/10 hood in size XL. I’ve had probably four hoods of various brands previous to this, all XL. Yet this is the first one where I feel uncomfortable wearing it: mainly from pressure on my jaw. It’s not overly uncomfortable, and I’m...

I know a little bit of ASL, including the numbers, but I wouldn’t use this one, because it is confusing for people who don’t actually know it: somebody already mentioned the similarity to the OK, plus the 3/6 confusion. I would use the hand up/hand down to avoid confusion and to be consistent...

It’s basically how my original open water instructor described the purpose of a knife while scuba diving. He said the purpose of it was not to fend off sharks or other such things, but instead to stab your buddy so you could get away. This was in the early 1990s, so the general idea of a scuba...

I have bought a fair ton of scuba diving gear from just these kind of people. One guy in particular went from open water diver to beginning technical diver in about three years. Realized that the next step to becoming a competent technical diver was going to take him a couple of years of hard...

Where’s the 0 meters option? :) My favorite part of owning my own compressor: I dive EAN32 on every dive (or trimix where appropriate).