The Planted Tank Forum - View Single Post - How long will a CO2 bottle last?
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post #23 of (permalink) Old 12-27-2012, 09:21 PM
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Originally Posted by HybridHerp View Post
Do you have to wait for the whole thing to drain before getting a refill, or can you get a refill still if there is a little bit left in this thing?
If you have a dual stage regulator, it doesn't matter if it goes empty. If you have a single stage regulator, there is a possibility of an end of tank dump when the pressure drops, and then you may gas all of your fish.
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