Very Cool Karl!! 45+ minutes and almost no decomp? That is excellent. Sounds like you are just having way too much fun. :-!Here are some images from last week at Innerspace. I trained under Kevin Gurr and Phil Short on the Sentinel CCR. All images by Kevin Gurr, used with permission. UW shots taken at approximately 95 feet with a D200. Pretty cool making a 45+ minute dive to that depth, still have twice that much capacity left in the unit, and almost no decompression required.