Glen, Please keep in mind that the regulator that I am speaking of was not in the normal list of Poseidon products. You will have to make a special inquiry. R/Jay Resepectfully, Jay K. Jeffries Andros Is., Bahamas Save the whales, collect the whole set. From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of glen brown Hi Jay Thanks for your input ,being a commercial diver using Poseidon and Kirby Morgan has become a religion to me over the years , not because they the smoothest ,but to me have proven there reliability .The cyklon 300 and 5000 when there lp valve is full open delivers 20 bar this should be enough pressure to over come the pressure at 100meters, and also ok for my bail out supply .The deepest I have dived is only 65meters, so diving to 100meters is something I am looking forward to . I will speak to some of old tech divers ,thanks for bringing that to my attention. All the best Glen SA |