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Weighting question

Discussion in 'Basic Scuba Discussions' started by jrwalsh20, Nov 5, 2019.

  1. jrwalsh20

    jrwalsh20 Nassau Grouper

    # of Dives: 500 - 999
    Location: Atlanta
    So this may be an odd question but work with me for a minute. I am an experienced diver (500+ dives) the last 400 over the last decade have all been with steel 100 or 120 cylinders with the same gear, wetsuit, etc... So I know what weight I need to wear if any. Usually 4lbs with 100's and 2lbs with the 120's.

    I will be diving this weekend with aluminum 100's - what is the approximate amount of weight I will need to add? I will try to do a weight check but it may be difficult due to location. I appreciate any insights.
  2. johndiver999

    johndiver999 Manta Ray

    # of Dives: 500 - 999
    Location: Gainesville FL
  3. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    @johndiver999 al100's, not al80's.

    @jrwalsh20 it dependson which tanks you have and which AL100. The Luxfer 100 is 3lbs positive, the Catalina is 0.4lbs negative. The PST100's and 120's are ~1.5lbs negative, the Worthington 100's are 3.3lbs negative, the Faber 100's are 0.5lbs negative, and the Faber 120's are .5lbs positive. So it could be anywhere from take a pound off, to add 6lbs depending on which tanks you're changing from.
  4. Damselfish

    Damselfish Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Boston
  5. jrwalsh20

    jrwalsh20 Nassau Grouper

    # of Dives: 500 - 999
    Location: Atlanta
    Thank you

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