Filling double LP 50's from a HP 120

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I have experimented with various "baby double" configurations and have decided that it is best to have a rec regulator and a rec tank for rec dives. Simpler, lighter, cheaper, less fiddly. This is especially true once you do more than a couple of dives between runs to the compressor.

A twinset for a reef bimble is just extra gear and clutter and complexity with no practical safety advantage especially if you fap around with wimpy transfills and end up starting a dive with less air than you otherwise would.

If you're on a dive where you really need redundant air you probably need more than two LP50s of it.

I get it that in principle you can have a single pair of regs for all dives but in my experience that makes everything else harder and it isn't worth it.
 
While ti I doubles are cute it seems that trans filling from a 120 is a round about way to end up with 80cf but have 3 tanks to maintain. I would just dive the 120.
 
https://www.shearwater.com/products/peregrine/

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