Bubbles in my tank?

[ssdarling]

I've had my little guys for almost a year now. I moved them to a window with indirect sunlight about a month ago. Several days ago I notices a few bubbles forming in amongst the algae. Today, there are bubbles everywhere, including microbubbles all over the substrate! What could be causing this?

[Super Jess]

Photosynthesis!

[Dch48]

It's the algae producing more oxygen because of the increased light. I have had my macroalgae get bubbles and float to the surface a few times. It's not a bad thing. It's called pearling.

[ssdarling]

Interesting! Thank you both!