18# Oxy for warm water, swimsuit through 3/2 mm and aluminum tanks or steel 72s
30# Oxy for 5/3 mm suits and general purpose using (more negative) steel tanks
45# Dive Rite for small steel doubles
20# SeaTec horsecollar for low profile diving
No BC, none, zip, none, from swimsuit up to 5mm, generally using steel 72 singles
N
30# Oxy for 5/3 mm suits and general purpose using (more negative) steel tanks
45# Dive Rite for small steel doubles
20# SeaTec horsecollar for low profile diving
No BC, none, zip, none, from swimsuit up to 5mm, generally using steel 72 singles
N