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    1st time past 100ft for a big guy, Advice needed!

    Background: I'm going to Roatan in December:D and the first dive each day is to 90-110ft. My dive buddy is a 5'3" 120lbs female AOW (15 dives), I am 6'7" 230 lbs male AOW (25 dives up to 75ft). Her SAC rate is about half of mine (.45 vs .9) and the dive operator does not have any tanks bigger...
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    Faber 23 HP steel vs Luxfer 19 AL pony

    Also, I will mostly be traveling and renting tanks to start, so that means AL80 as my single on a DSS SS long pattern backplate. Thanks everyone!
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    Faber 23 HP steel vs Luxfer 19 AL pony

    That's what I keep hearing, its a bouyancy issue. But.. Faber(HP steel) Full:-2.64 Empty:-0.66 Luxfer (AL) Full:-1.4 Empty:-0.1 Diff Full:-1.2 Empty:-0.56 Does 1 pound of additional negative bouyancy on one side really matter?
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    Faber 23 HP steel vs Luxfer 19 AL pony

    Hello all, New to diving:D, and love the term insta-buddy, which is exactly what I will have in the carribean so I want a pony as back up. Already read the spare air posts which are a riot of good fun so I want a reasonable sized pony. I won't rely on the air in any dive calcs! Can...
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