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Identify this growth

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Looks like some staghorn algae - a red algae ironically. You can do lots of research about it and how to get rid of it on google. Just like other algae, it's caused by something tipping the balance of your tank. It can grow on plants that are suffering too. It takes advantage of excess nutrients and light

In my personal experience, I get it when I have way too much light on my tank. I left for vacation once and my light timer decided it wanted to just stay on 24 hours per day for 7 days straight even though I set it on a schedule. Tank was covered in this stuff, but it slowly just started going away with a normal light schedule combined with manual removal. 

There's other tips and tricks out there, but overall it's not particularly harmful to the tank. 🙂

Staghorn algae in my tank :


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