Algea turning brown and black some spots blue - The Planted Tank Forum
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post #1 of 2 (permalink) Old 01-21-2004, 06:01 PM Thread Starter
Algae Grower
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:? Algea started to grow all over my rock decor. I used an algea removing agent and now the algea has turned to a brown color and some black color. BUT more concerning in the blue stuff that I see on rocks in my tank. I am most concerned with my fishes. Does anyone know what this could be. How can I remove this stuff from my tank beside removing the decor and bleaching them.
I will take a picture later tonight and post it.
I have a Malagasy cichlid tank. ph about 7.8, temp about 80 deg since one of my pairs just had eggs.

Thanks for you help

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post #2 of 2 (permalink) Old 01-21-2004, 06:45 PM
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Ya know, in my betta tank, which is a low light java fern & crypt wenditti setup, I had green & purple algae growing on the heater for a few weeks. it was paper thin, very much looking like the lichen that grows in the tundra.
I removed it and it hasn't come back. I think it was somehow leeching dye off the black rubber of the heater.
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