Tiny bubbles - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 08-08-2011, 10:36 PM Thread Starter
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Question Tiny bubbles

I have a 38 gallon newer aquarium Using a Aqua Clear 70 series filter. I have had quite a few aquariums over the years so I am not green to them. The tank is cycled with several Angel fish right now.
Today I noticed quite a few very tiny bubbles in the water. You really have to look close to see them. Of all my other tanks I never had this. I have used Aqua Clear filters alot with never a problem.
Any Ideas what is causing this or any Ideas on what to look for. Any suggestions appreciated. Thanks
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post #2 of 3 Old 08-08-2011, 10:45 PM
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Hows the water level? I know with my AC filters if the water get just a bit too low the water returning to the tank from the filter will cause bubbles. You can see them in the upper right corner where my AC 110 is and the water is about an inch or so below the filter return.

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post #3 of 3 Old 08-08-2011, 11:05 PM
There may be some trapped air in the inlet tube. When you start up, make sure to leave set with inlet tube rotated left for full flow until all sounds of air are gone, then you can rotate clockwise for reduced flow.
Otherwise, as the other member points out, it may be bubbles created by the return water fall.
In any case, I wouldn't worry about air bubbles - there a good thing

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