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<font color='#000F22'>I run my twins with a PPO2 of 1.45 for my expected max depth on a known site / wreck, as your only at that max depth for a relatively short time the av ppo2 would be about 1.3.

If I'm diving with the deco (80%) bottle, then I'll usually use air & deco on the rich mix from 9m - I have the facility to switch gases during dive. This also helps keep the O2 costs down .

I'd recommend you get them O2 cleaned, and try both options, the higher O2 will give you a longer run time or allow three shallow non deco dives.

HTH

gareth
 
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