| What Andrew says.
It's not just scrubber life that is reduced but scrubber efficiency even when the lime is fresh. Having half the lime means you have half the dwell time. What seems like breakthrough is probably not due to lime being exhausted but the dwell time in good lime being so reduced that it isn't doing its job.
Personally, I always do a full fill. <3hrs and not deep and I leave it in the RB (my last fill was in it for 6 weeks and still worked perfectly). If it comes down to cost then bite the bullet, rebreather diving is expensive, live with it. If it's just for a bimble then I go OC rather than waste lime/O2/cell life.
__________________ "I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S Thompson http://www.snp.org |