| Re: How often do you check your SPGs?
I check the pressure in my spheres at the beginning of the dive. If I check them at any other time, I feel it is an unnecessary luxury and reduces my reliance on the more important tactile and auditory methods of determining gas status. The exception would be if I were accompanied by noisy open circuit divers. My policy is to always begin every dive with dil and O2 maxed, period.
At my normal O2 consumption rate, I should get at least 10 hours. Any loss of gas otherwise should and will be entirely noticeable. Yo-yo dives at near-rec depths would be the only way to exceed this rate. On big solo dives, I prefer to completely remove my SPG's altogether, as they are more of a liability to gas conservation than an asset.
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