Posted by Eins on September 13, 2000 at 16:28:00:
In Reply to: Secondary Air source question posted by JRM on September 13, 2000 at 08:38:06:
Further to my first response, and in case you decide pro pony, there is a good answer to the question of how big a pony should be (and more) at this link:
http://scifi.squawk.com/scuba.html#PONY
check out #10
Eins