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Can't seem to get enough weight to acheive neutral on the surface

Discussion in 'Basic Scuba Discussions' started by Mark Carrig, Feb 12, 2020.

  1. Mark Carrig

    Mark Carrig Angel Fish

    # of Dives: 0 - 24
    Location: Memphis TN
    21
    5
    3
    Good morning folks,

    I'm 215 lbs, 6'1 "

    Fresh water diving.

    Using an Aqualung Aquaflex 5m suit and an Aqualung Zuma BCD.

    I've got 16 lbs loaded into the Zuma, and fully deflated, but still am positive.

    The Zuma will only hold two 4 lb weights in each pocket. Tried to go with a 5lb but the dimensions of the weight were too big for the pockets.

    I'm thinking I need somewhere around 4 lbs. more, and really don't want to use a weight belt if I don't have to.

    Does Aqualung offer accessories to add more weight to the Zuma ?


    Suggestions ?

    Thanks !
     
  2. Aviyes

    Aviyes Barracuda

    # of Dives: 100 - 199
    Location: Utah
    368
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    63
    Kimela, eleniel, ibj40 and 1 other person like this.
  3. Mark Carrig

    Mark Carrig Angel Fish

    # of Dives: 0 - 24
    Location: Memphis TN
    21
    5
    3
  4. Erik Forsberg

    Erik Forsberg Sea Corgi

    62
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    Switch to a steel tank will give you a few pounds negativity.

    Also note that you will need to add another 5lbs to offset your breathing gas (I guess you dive an AL80?).

    If you are neutral with a full tank, you will not be able to stay neutral when it empties and you will not be able to hold a safety stop or control yourself otherwise.
     
    SJT1961, Steve_C and scubadada like this.
  5. JackOfDiamonds

    JackOfDiamonds ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: The Holy Land
    1,021
    2,530
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    Steel tanks might help

    The more you dive you will gradually need less weight (usually with experience) so most likely this problem will solve itself eventually
     
    Aviyes likes this.
  6. Damselfish

    Damselfish Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Boston
    9,080
    1,616
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    Definitely weights on the tank, since its a back inflate you may find that helpful anyway.

    Time and practice may reduce your weight needs some. Also getting some dives on a new wetsuit may make it a but less buoyant.

    Getting steel tanks might do the job for local diving, but if you plan to travel they’re not often available.
     
  7. mmerriman

    mmerriman Captain

    # of Dives: 500 - 999
    Location: Boston MA
    808
    256
    63
    weight belt...
     
  8. JackD342

    JackD342 Dive Shop

    # of Dives: 500 - 999
    Location: Highland Park, IL
    2,514
    1,503
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    Add-on trim pockets (including those from Aqualung) are usually 5lb max, so you can add up to 10lb to the cylinder band. Unfortunately, with the Zuma that will still be in line with your waist and none of that weight will be positioned higher up on your back to balance your center of gravity. I expect you will find it difficult to impossible to achieve a flat trim position in the water. A couple of pounds can be added higher up by clipping an ankle weight around the valve, which will help a lot. I would not have recommended a light weight Zuma for your diving needs due to the weight distribution, but also because it is not as durable as their other heavier BCDs and loading it up with maximum weight will likely hasten signs of wear. It is best for tropical water.

    If you bought it new within the last 30 days, you do have an option to trade it in/up and pay the difference under their 30 Day Satisfaction Guaranty.
    Aqua Lung Returns and Exchanges
     
  9. W W Meixner

    W W Meixner Rebreather Pilot

    # of Dives: 500 - 999
    Location: Ontario Canada
    1,033
    708
    113
    Mark...

    As well as adding trim weight pockets...you may want to try ''shot packs'' as opposed to hard ballast...they're more friendly to your BC and will shape shift where hard weights will not...I swear by ''Sea Pearls'' shot packs...

    Assuming you're diving with a 3AL 80...you may want to upgrade to HP 100 steel cylinders...check out DGX for prices...if you're going to wear ballast...it may as well be something you can breath from...

    Hope this helps...

    W.M...
     
  10. Mark Carrig

    Mark Carrig Angel Fish

    # of Dives: 0 - 24
    Location: Memphis TN
    21
    5
    3
    That's really good info too, much thanks !! New to this game and still figuring it all out. Great fun.
     

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