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Hi, 
 
I've got a question concerning the above 2 regs.  I read somewhere recently
- probably on this group that a number of people use a Poseidon first stage
and the G250 second stage.  Forgive the stupid questions, but do they both
work on the same interstage pressure and if not, are you not reducing the
performance of one to accommodate the other? 
 
George, if you read this - why do WKPP prefer the G250?  Is it easier to
maintain/repair on site? 
 
I'd particularly like to hear from those that have done this and either
like or dislike the set-up. 
 
Finally, why do a lot of people dislike the "shower-heads"?  I have been
told that they are not suitable for restricted environments such as caves
due to their propensity to free-flow if grit gets into the second stage -
but is there another reason(s)?  I use one for deep open water diving and
have no problem with them - granted the servicing is more expensive and
more frequent. 
 
Thanks in advance for all help, 
John. 
-- 
 
John Grogan 
 
BS-AC, IANTD 
 
 
 
 
 
 
 
 
 
 
 
 
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