Starve mollies to get rid of hair algae

8 Mar

I’ve got hair algae in some tanks.  It’s hard to get rid of. I had heard that Mollies will eat it, if they are hungry enough.

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So, I gave it a try. A pair of  Black Mollies in a planted tank. No food. After a few days I saw the Mollies eating algae. I got my hopes up. I saw piles of green poo at the bottom of the tank. But, after a few weeks the algae was looking as strong as ever. I started feeding the Mollies just out of sympathy. I fed them a small quantity  and only once a day.

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See the green squiggly stuff below the fish?

I pulled the algae out by hand. The aquatic plants (Ludwegia and Rotala) began to take over and now the plants dominate. The algae is still there, but not much.

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Much better!

My conclusion is that the Mollies won’t solve a hair algae problem, but they can help, in combination with hand removal and other live plants that use up the nutrients.

One Response to “Starve mollies to get rid of hair algae”

  1. becomingcliche March 9, 2019 at 12:08 pm #

    Peace lilies can pull a lot of phosphates out of the water, so they are GREAT for algae issues. I had a large one in the bio-ball filter for an exhibit to keep down on the algae.

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