5 Star Cleaner, Why does water level go down? - Home Brew Forums
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Old 08-08-2012, 09:29 PM   #1
HootHootHoot
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I've always wondered this, just for curiosity...

I put the proper amount of Five Star cleaner powder in my carboy, then fill with hot water, stopping to shake to stir it up somewhat.

Once I get it all the way full, to the brim, I walk away. I come back several minutes later and the water level is below the neck of the carboy.

My Five Star cleaner appears to defy the laws of physics! Matter cannot be created nor destroyed- but somehow my water level drops!



 
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Old 08-09-2012, 03:34 AM   #2
JRems
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You mention hot water. Water when hot expands, so after you wait a little while it cools and "shrinks". I notice the same when I chill wort, there is even a "wort shrinkage" variable in brewing software to calculate the amount it will shrink.


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Old 08-09-2012, 03:40 AM   #3
HootHootHoot
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I thought that as well. Was hoping I wasn't crazy.

Thanks! Mystery solved

 
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Old 08-09-2012, 03:19 PM   #4
mpcluever
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Five Star is a company. Are you referring to PBW? It releases oxygen when it dissolves. I always chalked it up to that.

 
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Old 08-09-2012, 04:41 PM   #5
zachattack
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Quote:
Originally Posted by mpcluever View Post
Five Star is a company. Are you referring to PBW? It releases oxygen when it dissolves. I always chalked it up to that.
I was going to say this. There's a ton of bubbling going on as soon as the hot water hits the PBW. You aren't destroying matter, just evolving it as gas.

 
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Old 08-09-2012, 04:58 PM   #6
ryan0914
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Its from the expansion from the hot water, the PBW shouldnt cause enough evaporation to notice

 
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Old 08-09-2012, 05:09 PM   #7
TyTanium
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It's a cleaner, right? Cleaners clean up messes and make them disappear. Well, it cleans up water too and makes it disappear. That's why they call it no-rinse, because it cleans up the water too, so it dries automatically.

 
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Old 08-09-2012, 05:14 PM   #8
Hex
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Glass carboy stretches, flexes and settles to a larger volume.

 
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Old 08-09-2012, 05:43 PM   #9
zachattack
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Quote:
Originally Posted by ryan0914 View Post
Its from the expansion from the hot water, the PBW shouldnt cause enough evaporation to notice
Over a couple minutes? I'm guessing it's gas suspended in the liquid (it's hard to fill a carboy without a bunch of aeration) coupled with the gas evolution.

 
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Old 08-09-2012, 06:47 PM   #10
malkore
 
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Hot water shrinks everything! Don't you do laundry!?


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