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Perfect. That’s exactly what I do as well. I use a vacuum bag for the scrubber and then put into a weather sealed storage box. That way I protect the scrubber and moisture content in the sofnolime.

How do you store a partially used scrubber until next time you want to dive it?

Congrats. Sounds like you’ve got it well under control and thanks for your excellent write up. This gives noobs like me something to look forward to. I’ve gone with the BMCL Optima and will be going through the training soon.

Thanks for validating. The guys I’m working with are right up there in terms of experience and knowledge.

Water temp on the day was 14C or 57F. Typical conditions around Melbourne are between 12-14C all year around and the guys I was talking to said it’s fairly consistent. Advice was, scrubber can go for 3-4hrs but you wouldn’t start a dive at near 3hrs. You’d finish all your dives, if you had to...

Optima has WOB of 1.43 J/L at 40m on air. Optima CM is at 1.38 J/L During my test dives, I did a few different tests to see how the unit would react. I went head down, head up and inverted (looking up at the surface from depth). To be honest, WOB felt just about the same in all positions...

They recommended I get the normal hud, train on it and use it as a spare. Then get the nerd and install it after doing the course. That way you have a spare hud just in case. I really liked the iBOV. It sat comfortably in my mouth and the MAV buttons were easy to find. I guess the bonus of...

Thanks to Deep Blue Ventures, today, I had a wonderful time test diving the BMCL Optima. Did two dives off the Blairgowrie Marina pier, in shallow water (max depth 3m) but with fairly strong current. Here is my brief report from the demo day DBV held today. The day started a bit on the cold...

Thanks - I think you actually answered my question pretty well in your 30-hour review thread....;-)

So a key question just occurred to me. If you had the choice, were new to rebreathers, would you choose the standard BMCL Optima or the Choptima....when the unit has clearly been so well refined from its original version years ago?

That's funny ;-)

Were you using sorb or EAC on that dive?

Yep, seems the Revo has some passionate followers. I see quite a few people here diving the “yellow jelly bean” - they do look cool, especially in groups of 5 heading down to the shore.... Then there is the odd prism or two, looking like they have a bug cocoon on their back :))

Thanks for the advice. That’s exactly how I’m approaching it. I have very detailed research on just about all back mounted rebreathers, side by side in a giant spreadsheet and now I’m adding the insights from here based on experienced feedback. So all good on that front. Last step is to dive the...

Thanks for sharing. On paper I’m currently leaning towards the optima and will have a try dive on Sunday so that should provide some practical angle on the subject. My instructor has a sidewinder which he showed off recently. That setup looked really nice - though he is more into cave diving so...

Yes, it is. To be fair, I don't know the try-dive specifics - will find out on the day. But shallow is my expectation/assumption.

$50. Not sure on specifics - shallow is my expectation (or even a pool)

Good advice. I'm doing a try dive on the back mount this Sunday and I think they will also have the choptima there too. So may get that opportunity...we'll see.

Yep, very much agreed on that score.

Hehe, it would be funny to see someone dive with the long and skinny tanks hanging out the back ..... ;-)))