If you had to choose, 80% or 100% for deco gas and why.

[waterpirate]

You really know how to make me squeal don't you? IMHO the hydro is one of the best dives on the east coast. Work kept me out of Pompano last year, I missed her. I would dive the hydro on any combination of mixes that did not kill me.
Eric

 

[Scubadude_LA]

The Hydro Atlantic dive July 18 2014 on Vimeo
neither 80% or o2 used, just 21/35 and 50/15, fun dive

Nice video! Fun, Fun, Fun...
Dove the Hydro in June, nice dive.
Your version has more glamour

For the thread:
21/00
38/00
82/00
shame on me...