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...the downside is keeping all those tanks 'dive-legal'......I own 2 ponys/2 twinsets/9 singles.....and it can add up annually with visuals and periodic hydros...I just picked up 3 of my tanks yesterday form a LDS...spent $ 120 for 3 hydros/visuals/ EAN 32 fills.
Karl
looks like you even got a "J" valve thrown in for free eh?