TG6 is a good budget friendly option. RX100 is also a good entry level if you find a camera+housing deal. UW Photography can get crazy expensive. You need to define how much you want to invest in it, then you can get better opinions on options. When you get into housings with ports, lens...
Depends on who put them on. spec is ~50ft/lbs torque depending on manufacture of the tank. A rubber mallet used with care is usually enough to remove but don't hit on the valve handle, hit on the metal of the opposite side. A large crescent wrench may be needed, If tight use some tape on the...
If those valves are assembled correctly, the picture would indicate they are wide open, and the tanks are empty. I would be a bit concerned about them being stored like that. I would want to pop the valve for a look inside.
With my D6 seconds I find that if I inhale very slowly it will cause the diaphragm to flutter causing slight wet breathing. I have to inhale very slowly for it to happen. I tend to like it as when my mouth gets too dry this helps out.
Yes now I understand. I'm not sure how much backup benefit that would buy you. If it was just an interference fit. then if the primary seal failed. the water pressure would likely just force the smaller o-ring down the lid and flood the container. If you routed a groove then its sealing...
I haven't tried to build one so, If I understand what you are saying you would be trying to get 4 mating surfaces vs 3 by additional lip for the o'ring into the canister. It offers one more line of defense but requires more precise fitment when building.
Another vote for the DGX mask. I bought two more once I started to use this in case they ever decide to stop making them.
They have had thier ultra-view on sale for a little while now. The mask itself is the same as the standard with a lens coating. I'm not sure if it really does anything...
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