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  1. Matan

    Flash rust in O2 bottles

    What's special about it compared to simple green/etc. ? Matan.
  2. Matan

    DIR- GUE Is it worth taking Fundamentals this late in the game?

    Yes. Same as many people I had technical diving experience and 10+ years of diving before fundies. But after fundies I was so amazed by how good can one really become on the basics that it really changed the way I looked at diving. I have all sorts of "expensive" gear...
  3. Matan

    DIR- GUE segregate deco regs from stage regs?

    happened to me once following a T2 dive - Only when looking at the photos taken during deco later on I noticed that the reg I "usually" put on my o2 was swapped with the reg on my bottom stage. They are not the same model so actually could have noticed this pre-dive. However - it doesn't matter...
  4. Matan

    Question Iso-risk decompression schedules

    No. but looking at the graph for the deep 400' dive he presented - it seems the total deco difference was +1h for the safer algorithm :) Matan.
  5. Matan

    Counterdiffusion (high-nitrogen-content gas after high-helium-content gas)

    a lovely theory which I never cared and never will care about in any dive I'll probably do in my lifetime. and I have shifted like so many other divers from 70% of helium to nothing - I'm still here. is this theory real - yes. practical for 99.999999% of all dives - IMHO no. OR perhaps it's...
  6. Matan

    Gag strap over or under mask strap

    so you would bail out and gas switch using QC's during entire deco? i.e. you will complete the entire dive on your BOV? must be a really good WOB on that BOV where can I get one? Shrimp/Divesoft definitely not up to that - I would gas switch to a regulator ASAP after going to the BOV. Matan.
  7. Matan

    Scientific studies on air breaks

    Same here - except not extreme exposures. So in answer to OP: If one asks himself "should I risk my lungs over + 10 minutes of deco?" the answer is obvious to me. I'm not aware of any agency not recommending air breaks beyond a certain time on high PPO2. Matan.
  8. Matan

    DIR- Generic Drysuit inflation bottle- vertical or horizontal valve?

    doesn't matter. doesn't impact any gas switch/bottle rotation related actions (never did for me). Matan.
  9. Matan

    More weight on feet needed. But how to do so?

    regardless of this post (which I will not comment on), can you please explain how you're using a V-weight on GUE CCR? Matan.
  10. Matan

    Unbalanced regulator for high O2 deco mixes

    To OP: 1. You asked for a bailout deco regulator - means your have a rebreather. 2. Rebreathers are expensive. 3. Not looking into anyone's pocket - but: - If you can buy a rebreather - you shouldn't be saving on a regulator. - It's the equivalent to hearing a diver saying that helium is...
  11. Matan

    DIR- Generic Weight considerations with Al80 twin set

    I haven't seen an al80 cylinder that's 5lbs positive when empty - which brand are these? Bands + manifold + another 1st stage add weight. Same weight as single al80? no - go ahead and do a weight check it saves you guessing weights and being unsure if you're properly weighted. Empty cylinders...
  12. Matan

    Extreme heat and temporary scrubber storage

    In some countries (Israel summer for example) - this can get even hotter. In some countries (Israel summer same example ^^) - the water will be ~84f. 8 hours being on a boat makes sense (ropes off 07:00 -> two dives -> back at 15:00). Takes me also 2h do drive home. No major scrubber issues...
  13. Matan

    Cozumel color correction experiment

    Need a little clarification - are you using ambient filters on your video lights? I'm actually interested how these work at depth - since shallow obviously it's just ambient light (real ambient - from the Sun ^^). Matan.
  14. Matan

    Cozumel color correction experiment

    Thank you for the reply. regarding AFS - I completely agree and I'm also changing to that - super frustrated from multiple videos ruined by LX10 AFC honestly regarding SS to 60 during 4K 30fps I understand - just not sure why let the camera determine ISO for you. Also I'm shooting CinelikeD...
  15. Matan

    Cozumel color correction experiment

    great stuff - #1 is definitely the best. this was shot ambient light and just the Keldan filter? quick Q - I find that with my setup (similar to yours LX10 WWLC but I have x2 bigblue 10K) I'm having auto focus issues. are you shooting with AFC or AFS? also - why S priority and not full manual...
  16. Matan

    drysuit user changeable neck seals

    Never heard of Hollis neck seals. just get a silicone neck seal for your wife's suit - and this time get 2 (to have a spare one ready). eBay searched drysuit silicone neck seals Matan.
  17. Matan

    Retroactive gradient factor/tissue saturation calculation

    subsurface solves your quiz visually - enjoy :) your T1 instructor will definitely be more helpful than me, but: SOP is quite clear - plan your dives using Decoplanner - Than pragmatize (which as you know has a set of benefits when is comes to gas sharing scenarios / plan adjustments / etc.)...
  18. Matan

    Retroactive gradient factor/tissue saturation calculation

    If you've taken T1 - contact your instructor. If you haven't taken T1 - contact a GUE instructor to start working on becoming a T1 diver - you won't be disapointed. To answer to the topic at hand (based on my personal opinion): GUE SOP - all decompression should be planned based on...
  19. Matan

    Wanted WTB - Scubapro G250 crystal

    What are the odds :) If anyone has one to sell - the header says it all. Matan.
  20. Matan

    Inflator connection to divesoft analyzer

    I know they have it - the cost if that + shipping is more than twice compared to buying those parts on eBay. Matan.
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