>>267549Going below 100 ft without some form of redundancy is foolhardy.
Going past 165 ft on air, moreso foolhardy.
At 200 ft, even if you have a SAC rate of 0.5 cfm, you're consuming 3 cf/minute. Stressed @ 1 cfm? 6 cf/minute. Two stressed divers (air share) at a relatively calm 2 cfm? 12-20 cf/minute.
Bottom line, your AL80 is good for about 5 minutes at that depth.
Minimum gas I would consider for that dive is:
Twinset, HP100s, TMX 18/45 (200cf)
Stage, AL80, TMX 18/45 (80cf)
------------
Deco, TMX 25/35 (80cf)
Deco, EAN50 (80cf)
Deco, EAN99 (80cf)
>Eeee, I can't wait to dive it! 