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Not my most liked post, but one that definitely draws enthusiastic response from those who try it. If I had a nickel for every time @Tracy has texted me about him using the process, I’d have two nickels. Which isn’t a lot, but it’s weird that it’s happened twice. :-) I used it a couple of...

As an American and literally the only person I personally know who is ever been to Egypt (for any reason), I would reinforce that. When I tell people I went to Egypt for a scuba trip they look at me like I have three heads. Their usual reaction is something like: “why on earth would you go to...

I find that O-rings that have spent more than a couple of years on a tank become completely triangular in cross-section, to match the bevel of the O-ring land in the tank. And looking at them, it seems as if the material has even changed consistency, from rubber to plastic. And I too have...

Excellent job really digging into this! The only purpose for lead is to keep you neutral at the point of maximum buoyancy. And that point is when you have minimum gas (i.e. “empty” tanks) and maximum suit buoyancy (i.e. at minimum depth — at the safety stop). That means that for weighting...

I think you’re confusing Gilboa and white star. Maximum depth at white star barely gets below 60 feet. There’s one specific spot you have to go in order to hit that 60 feet (inside the crusher). It’s actually a problem for teaching advanced classes there, because you have to go below 60 feet...

I just reread your post. For me, “Lake Huron“ means the tip of the thumb, because I live in the Detroit area. But if you mean the whole lake… There are so many possibilities! Alpena is a great place with lots of wrecks. There is a wreck called the Nordmeer: A 471 foot long freighter in 40 feet...

My favorite of the recreational Lake Huron shipwreck is the Regina. 70 feet of water makes it very approachable with plenty of bottom time. For those with the training and skill, it is a very easy wreck to penetrate, yet allows you to grow into more advanced penetration opportunities as well...

I echo the general thoughts of the people writing above. What you’re descr is a pretty unique configuration. Unless you truly have substantial and very unique requirements, I would suggest that you create a configuration that is a little closer to the tried and tested configuration that...

You can certainly do it that way… And if they’re excessively long, and I had everything else positioned exactly where I wanted them to be but there was still too much bolt left, that’s pretty much exactly what I would do. However, if that truly is threaded rod (and not a bolt) on your tanks, I...

The best write up from a starting-from-nothing perspective that I know of is probably again @clownfishsydney’s website: https://www.michaelmcfadyenscuba.info/viewpage.php?page_id=16 This documented the process by which he purchased his compressor, now a quarter of a century ago! It also...

Last time I figured this out (https://scubaboard.com/community/threads/lot-of-complaining-goin-on.16999/page-5#post-9732812) I was paying $15 per fill. Notice that I have $6000 for the acquisition cost for my compressor. That was $4000 for the compressor itself (a 6CFM Bauer-based compressor...

The SRB 5300/5700/5900. The one that inspired this thread about cleaning the laser-drilled orifice: Cleaning Sherwood First Stage Laser Drilled Flow Control Hey, it’s a great conversation-starter! :) And I prefer the SRB 3200/3400 second stages. The round ones with concentric grooves...

I hope you’re not eliminating the entire dry air bleed: the laser drilled version is pretty bulletproof (and cleanable) too. I hate – hate! — unsealed first stages. Sure: my mid-1990’s Blizzards! :) (And I even prefer the early 90’s round unbalanced second stages.)

The very brief version is: a fully pressurized tank squishes the Belleville washers, pushing the orifice toward the seat on the end of the piston. That slightly squishes the piston spring, allowing it to push back a little harder. That decreases the IP lower than it would be if the orifice...

I don’t think there’s any blame at all to be assigned, and certainly not after the diver became distressed. As others said, with a diver in distress, you’re going to end up with silt. Trying to figure out if it was “too much” or something is simply counterproductive. You were focused on helping...

You are correct: the O2 cleaning *process* is supposed to be the very last step. Detergent by itself does not equal o2-clean. Nor does O2-clean equal a single step. And the detergent step is never the last step: you have at least rinse and dry. So nothing that anyone described violates that...

(I hate the way this forum mangles YouTube links: the part starts at 1:58 and goes for 8 seconds. Here’s the link that starts there.) For those who couldn’t be bothered to fast-forward: Like I said, it doesn’t help that I was already irritated. But also: you can simplify something, or you...

Thank you for the clarification. Sidenote: capitalization exists for a reason. At least then I would’ve known to look for a specific chemical instead of suspecting a typo. Yes. Marginally. Your entire post screamed vague and lazy corner-cutting to me. Your reply makes it a little less vague...

OK, you picked a very bad time to write this reply: I’m still in a bad mood after writing the reply above! First of all, this is for steel tanks only. None of this should be done for aluminum tanks. Second of all, I wouldn’t characterize any of this as “slosh some cleaning solution around”...

So, with no direct knowledge of what’s going on, you voluntarily make a strong statement saying that “The tank would Definitely Not be oxygen-clean after an acid-wash”? Why would you do *that*? There is so much voodoo and superstition surrounding “oxygen clean“. And for me, that is the biggest...