Isn't pure oxygen explosive? Hope you're not smoking and open the livewell
In a confined space or if you lit a cigarette maybe directly in front of the stone maybe? I keep the tank in a back compartment and run the hose down into the livewells. When I exchanged my bottle at the welding supply store the guy said he has a lot of guys running the same system for fish care. Check out keep alive systems online. They make tons of products for large and small scale fish transport and keeping bait alive.