How long can stages be left underwater?

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Addison Snyder

Contributor
Messages
339
Reaction score
278
Location
Gainesville, FL
# of dives
500 - 999
How long do y'all leave stages underwater for? Freshwater or saltwater? Assuming aluminum stages. How damaging is it to the tank itself vs the reg?
 
How long do y'all leave stages underwater for? Freshwater or saltwater? Assuming aluminum stages. How damaging is it to the tank itself vs the reg?
While we never had a reason to purposely "leave" any gear underwater, we once lost a stage bottle, a steel 72, in Baja, years ago, near Todos Santos. and only recovered it after about forty-five days.

Aside from some encrusting sponges and algal slime deposition, the tank and regulator remained completely operable; and we used it for quite a while.

Still have that regulator, a Cyklon 300; have no idea what eventually became of the tank . . .
 
How long do y'all leave stages underwater for? Freshwater or saltwater? Assuming aluminum stages. How damaging is it to the tank itself vs the reg?
with or without an anode?
The tanks will rapidly pit without an anode in both waters, faster in salt but FL freshwaters are harsh on tanks too.
A month with no anode and the tank is scrap and definitely not passing VIP. They are a consumable product for actual project dives.
 
It depends on the water, but at least here in Fl freshwater caves, multiple years. It won’t be pretty, but it’ll work.
 
Gear recovered with bodies of divers was found to be operable even after years of saltwater exposure.
 
It depends on the water, but at least here in Fl freshwater caves, multiple years. It won’t be pretty, but it’ll work.
"won't be pretty" understatement of 2023 :D
 

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These were sitting on the bottom of Lake Huron for 40 years. The doubles were still holding pressure when they were recovered. The center oxygen bottle had rusted through.

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http://cavediveflorida.com/Rum_House.htm

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