Why is my Betta tank suddenly full of algae after adding an LED light?

Question

I have a Beta fish named Tango. He is my fifth fish and I have never had an algae problem, but now I have algae in his tank. I had no problem last year when he had the same tank. The only thing that has changed with his environment was lighting. He now has another LED light above him, and I was wondering if the lighting change had anything t do with the algae. Pet's info: Fish | Unknown - Fish | Male | unneutered

Jessica Desrosiers · Accepted Answer

Too much light, whether natural or artificial (green/yellow LEDs can worsen the issue) can sometimes cause an increase in algae growth. Moving the light around a bit to see if it helps, changing to a different type of LED, or just cleaning the tank more regularly/adding in algae eaters may help.

Why is my Betta tank suddenly full of algae after adding an LED light?

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