Ixion
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I'm new to Scuba but just picked up an XS Cressi Air Travel a couple of weeks ago to use in Hawaii with my 3mm wetsuit. I'm assuming for the dives I hope to do next year in Southern California (Catalina Island, Northern Channel Islands) that I'll need to get a 2nd BCD for cold water (considering the ScubaPro Laby Hawk). Although what made me wonder, is that as far as fresh water goes, I needed 10 lbs with my 3 mm suit in the pool, and I needed 12 lbs in the lake with a 7mm suit. It states it can hold up to 20 lbs in the specs.....with switching to salt water, I'm unsure of how much additional weight I'd need (although I'll be able to find out for sure once I get a chance to dive in a couple weeks in the Kona area) but if what I needed was 20 lbs or less does that mean the Air Travel would work? I just like the idea of being able to take it with me if I fly to CA, since it weights roughly 5 lbs, easier then the heavier Lady Hawk, 
Thanks for taking the time to help out a newb!
Nicole

Thanks for taking the time to help out a newb!
Nicole