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Discussion Starter · #1 ·
I'm shopping around for a CO2 cylinder, and here's my dilemma:

I'll be using it for a 47 gallon, so I didn't think that a 5lb would be enough. however, all the places in my area only exchange 5lb or 20lb cylinders (they just don't carry 10-pounders). a 20 won't fit in my stand, and I don't want it looking ugly next to the tank. There is ONE place that will refill any tank for me, but they said I'd have to leave it there for a day or two. How big of a problem is this?

Can you tell me which size cylinder you'd choose and why?

Thanks :)
 
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