DogDiver
Contributor
You might want to concider a Faber lp 45. Nice balest for 20 feet if you start to get positive during deco
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
I would do this, except steel doesn't seem to be acceptable for deco/stage cylinders. I do really like the proportions of that cylinder. Viktovice has some really nice bottles I'd like to import and use personally even some as doubles. 27" long 5.5 " dia 300 bar ..
Most early tec courses are going to limit the amount of deco you can do. AFAIK that is around 30 min for the early courses so a 40 should be fine for that. Every tech diver I know has at least one 40 in the mix on their dives, even if it's just a spare O2 hanging on the line.
A 40 will work fine for the training dives up through Adv Nitrox and Deco Procedures. At least with the TDI courses due to the limits on deco for training.