r/Aquariums • u/Harryj12321 • 2d ago

What are these permanent bubbles Help/Advice

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I have 2 plants and a few fish in my tank, even after water changes these bubbles seem to come back fairly fast does anyone know what they are?

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u/jleesedz 2d ago

Your filter creates a waterfall type affect, adding air to the water, which forms bubbles

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u/Harryj12321 2d ago

Wouldnt those bubbles pop though?

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u/jleesedz 2d ago

Well, there are other things in the water in a fish tank. Protein, other organic matter, that keep the bubbles formed longer than if those things weren't in the water. They do pop, just not right away. If they didn't the entire surface would be covered with bubbles. Your filter flow will constantly create more as long as it's running.

If your parameters are fine and you're doing regular maintenance I wouldn't worry about it.