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A LP85 holds 85 ft^3 only at +10% pressure of 2640. At 3600 psi: 3600/2640 *85 = 115 ft^3. A HP100 holds 100 ft^3 at rated pressure of 3442. So I believe the difference is 15%.

LP85 @ 3600psi holds 15% more gas than HP100 @3442. If you can get cave fills (typically ~3800 psi) it does make sense IMHO.

What Manatee Diver said

Blue Grotto does not allow solo diving unless you have a solo certification. There are some nice dive charters out of Boynton Beach/Jupiter area. Depending on the day they do reef drift dives or reef drift/wreck. There are some wrecks with large aggregations of Goliath Groupers. It's pretty...

I have not dived Oriskany, but be aware that only the "island" (i.e. control tower) is within recreational dive limits. The flight deck is at 145', I believe.

@Jackie Treehorn: Thank you. That looks like a nice solution.

Anyone come up with a good way to mark your name on this reel?

You’ve heard from the seasoned instructors, so let me give you my perspective as a student who recently went through this, for whatever it’s worth. I recently completed Intro to Cave. It was my first real tech class, and I did it in sidemount as a shoulder problem makes doubles difficult for me...

Nestle wants to bottle water from Florida's Ginnie Springs -- for free Discussion in 'Cave Diving' started by Merlyne, Aug 3, 2019. There was a previous long discussion of this on SB. There are some intelligent arguments on both sides.

@ChuckP: Not sure what you are trying to say here. You seem to be implying that because you are holding your breath and not inhaling anymore from your reg that your PO2 is not increasing as you descend. If that's what you are saying then I don't believe that's correct. There are two forces at...

Pm sent

+1 Subsurface

Thanks. Guess I’m behind on updates.

Anyone know if shearwater intends to update software for perdix to show surfgf?

@npole. Perdix Dive Planner on the surface allows you to calculate what NDL would be based on SIT, average depth and time for next dive. And, a deco schedule based on that input from the user. Once you start the dive it will give you acutal on-the-fly info on what actual stop schedule is as the...

Yes. Dive Planner under Dive Setup which can be accessed during the dive

I can connect Perdix easily to MacBook or iphone. Forget Shearwater Cloud. Subsurface is better. I pair Perdix with iphone via Bluetooth, upload dive log into Subsurface and then can sync Subsurface with macbook or PC if I want. It's an awesome dive computer, but the Bluetooth implementation is...

+1 for 2 Shea. FishandDiveTampa.com Adam or TJ will take care of you.

Mr. Spear, I believe it's time for you to zip up your flame retardant suit now!

I just did Ponderosa and Taj Mahal with Protec. Great outfit! Taj was beautiful. Some nice speleothems, good halocline, and a cenote with lots of bats.