blackice once bubbled...
5 !!! wow .. that must be some serious diving. 2 for back gas, 2 for stage bottles,.. and one more ... a 3rd stage bottle?
The fifth 1st stage is for my argon bottle. A bit of overkill perhaps to use a DS4 for argon, but it's nice to have all my regs the same.
Cheers,
Merlin