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Old 03-23-2013, 12:10 PM   #1 
Racoon293's Avatar
Join Date: Dec 2012
Location: South Side Crew!! ATL
bubbles after water change?

why do small bubbles form on the tank walls and decor after a water change? they go away in a day or two, I think they're harmless. just want to know what the science is behind it.
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Old 03-23-2013, 12:47 PM   #2 
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Join Date: Feb 2012
Location: South Glens Falls NY
I have no idea, but I get them too lol
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Old 03-23-2013, 12:59 PM   #3 
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Join Date: Mar 2013
Location: Mojave Desert, California
Bubbles are usually the result of dissolved gas in water, which are created from chemical reactions between elements in the new tap water and existing tank water elements.

When you pour the new tap water in, the chemicals in the tap water oxidize with the impurities in the existing tank water.

It's nothing to worry about.
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Old 03-23-2013, 01:11 PM   #4 
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Me too! >< I've heard that our water (tap) has been mixed with various gases, and when we introduce it to the tanks, those gases get released. It's totally harmless, and it goes away really easily if you swirl the water around or brush them off the glass. :)
Whoops! Sorry ryancalif! Didn't see your post ^^'

Last edited by quietlythundering; 03-23-2013 at 01:12 PM. Reason: Relegating credit
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Old 03-23-2013, 01:27 PM   #5 
Hadoken Kitty
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Location: U.S.
Sometimes it is due to a filter that needs to be rinsed in old tank water. Just dab it in your bucket, swish it around, and then replace. (:
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Old 03-23-2013, 11:23 PM   #6 
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Join Date: Feb 2013
Location: Midwest
I have seen this before but if I let my warm water sit for a couple of hours until it hits the right temperature with lids open (to release gases) I don't see this. I also at another members suggestion have started using a plastic colander to when I pour water in the tank it spreads the water ( thus IMO releases more gas) and messes up the gravel hardly at all
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Old 03-23-2013, 11:37 PM   #7 
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Join Date: Oct 2011
Location: Australia
You can reduce the effect by giving your water a vigorous stir before putting it in the tank. This helps distribute the water conditioner as well.
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