Algea, moss or fungi - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 12-25-2012, 12:23 PM Thread Starter
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Smile Algea, moss or fungi

hello fellow fish keepers
im new on this site but i have been keeping tropical fish for over 10years now and i mainly keep plecs. cut a long story short.....i bought a new tank (2nd hand) in Sept this year, all set up and running a external filter, all my plants are fake/plastic. i am finding a like growth on my stones and plants, its a really deep purple/brown, the growth then starts growing like hairs and becomes very thick and visable. i have trawled though pic's to try and identify it and its really bugging me. it does not seem to affect my fish. i have added some pics in my albums titled the same as this thread


Last edited by DixyDan; 12-25-2012 at 12:29 PM. Reason: add info
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post #2 of 4 Old 12-25-2012, 02:33 PM
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It looks very much like Black brush algae too me. How long are your lights on for? Do you clean the gravel at all?? This Algae won't hurt anything.

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post #3 of 4 Old 12-27-2012, 04:55 PM
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Yes, that is brush algae in the photos. This is technically a red algae, though usually we see it as gray/black in hue.

Harmless as Boredomb said. And without live plants, actually beneficial because it functions similar to plants in assimilating nutrients and releasing oxygen, though not as much as live plants would.

And, welcome to Tropical Fish Keeping forum.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #4 of 4 Old 12-30-2012, 02:53 PM Thread Starter
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thanks to both for your response, certainly looks the same
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