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  1. okvij

    Save a Cave!

    Hello, I'm asking for help all forum members for the saving a cave in Mexico. It's an underwater cave, of course. The single entrance is located in the jungle between Tulum and Playa del Carmen. The land owners have been putting off the sale due to serious concerns that the cave will be...
  2. okvij

    Are arms positively buoyant?

    Bare arms and legs are negative. They are muscle and bone, so there's no way for them to float. If you add neoprene, it adds some buoyancy depending on the thickness.
  3. okvij

    fins rub on top of foot

    Has Slav engineering gone too far? :D:D:D P.S. I'm Slav, too.
  4. okvij

    fins rub on top of foot

    This kind: Boot by okvij posted Sep 25, 2019 at 2:19 PM
  5. Boot

    Boot

  6. okvij

    fins rub on top of foot

    I have a similar problem with raised instep - only the difference is that I don't get a blister but pain only. So the socks solution is not applicable. I wonder whether the hot water and reshaping the foot pocket will work. The fins are Apeks RK3 - very tough material. I was also thinking of...
  7. okvij

    Missing diver found entangled - Miri, Malaysia

    Maybe a heart attack while panicking due to the entanglement....
  8. okvij

    Taxi pimps? Wtf?

    The repellent for such horseflies is talking to them in a language they don't understand. I've done it a few times - they simply go blank.
  9. okvij

    I'm a newbie who tried a BP/W for the first time today...

    Congratulations! Choose the lift and the plate material based on the type of diving you will be doing. If you will be using a 3 mm wetsuit, you don't need a heavy BP and 40 lbs of lift. Try different BC configurations in the pool with the gear you will be diving, and see what works best.
  10. okvij

    Tool kit for regulators

    Thanks, all. You all make valid points. I have another set for back-mount but the gf will be using it until she gets her own. I'm aware that I will need longer SPG and LPI hoses. As for the 2m hose, it will be going around my torso as per the DIR setup. I'm using a BP/W.
  11. okvij

    Tool kit for regulators

    Hello, I recently bought sidemount regs which on occasion I want to use for back-mount single tank for which purpose I will need to reconfigure them a little. My question is what is the optimal starter tool kit I need for this task? I know I will need at least two wrenches and alan key(s). But...
  12. okvij

    bouyancy without reference point.

    I think this is the best way. Computers take a few seconds to show changes and the precision is not very high. Ears might not be that sensitive, too. But particles - you see their movement immediately .
  13. okvij

    Excess carbon dioxide and severe narcosis?

    I once read about a similar technique for averting panic caused by increased CO2. Recall from memory: 1. Stop 2. Exhale forcefully twice 3. Take a deep breath and expand your belly so it becomes like a basketball 4. Hold breath as long as you can Maybe there was repetition, I don't remember well.
  14. okvij

    Tanks' weight and buoyancy

    Wow, 5.26L from the material, seems a lot. But it makes sense. Thanks.
  15. okvij

    Tanks' weight and buoyancy

    Hello, Can anyone tell me the precise weight of an 11-liter aluminum tank at 200 bar and 50 bar? I saw someone on quora posted images of the scales reading for such a tank with 3000 psi and 1000 psi. 3000 was around 17.7 kg and 1000 psi was around 16.2 kg. The reason I'm asking this is...
  16. okvij

    Student Trouble With Nose Breathing

    Water in the mask - positioning, tightness? Did you try a different mask? What is the body type and fitness level of the student? How easy is it to breathe from that regulator? Sometimes the breathing resistance creates a feeling of shortness of breath which can be quite stressful for a new...
  17. okvij

    Trash, trash, trash

    What packaging would make you happy? Glass? Then it would require recycling/washing which means resources, e.g. electricity which comes mostly from burning coal... Paper? Then the ocean will be full of rotting paper. How will this affect the ecosystem?
  18. okvij

    Need advice for new BP/Wing setup!

    One more suggestion. I also like the red but keep in mind that it's red only on the surface :)
  19. okvij

    Depth in multiple dives

    I know the rule for multiple dives - start with the deepest dive and continue in descending order of depth. I have asked several time for the reasoning behind this and got several different answers of which I couldn't make sense and don't even remember. Can anyone explain the rationale here...
  20. okvij

    Advise for a BCD

    Neither, haha! :) Get a BP/W!
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