i have done two 50 to 65 m twice a day on dive trips in places like norway and singerpore but i always had a good 4H+ between dives ,
have done two dives a day for 6 days max depth on same days was 68m first dive then 56m later , the later the better . me thinks ,
ps
if you get bent dont blame me
all air dives and o2 deco