AbyssalPlains
Contributor
Hi all, I'd like to use a ScubaPro Mk5 out of the box for 50% deco mix. I know they come up to 40% out of the box and I'm not looking for answers the manufacturer or a shop would give me. I want to know if I really (as in, REALLY) need to O2-clean this reg. 40 vs. 50% sounds like it shouldn't matter from a physics point of view.