New Type of Algae in Tank... - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 4 Old 10-10-2010, 07:20 PM Thread Starter
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New Type of Algae in Tank...

I have a new green colored algae growing in my tank. It's all along the bottom of the tank, just on the gravel. It's hair like and moves in the current of my filter. I don't know if it's good or bad algae... Help...

It's only in the center of the tank where the light beems down the most. My tank is sparsely planted and has a ph of 7.3. Tank has been fully cycled for 2 months and ammonia and nitrites are always at 0. Nitrates at 10ppm. I do a 20% water change once a week.

My otos don't seem to touch the algae, so that's what made me wonder if it was good or bad.

Ignore the white thing in the pictures. It's just an algae wafer.
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File Type: jpg algae 2.jpg (95.0 KB, 20 views)

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post #2 of 4 Old 10-10-2010, 07:35 PM
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This has the appearance of cyanobacteria, not a true algae but often considered as one. It is caused by organics. Though having said that, I find it occurs in certain tanks and never in others, even though under identical light, same feeding, fertilizing, etc. I would do a larger weekly water change, 50% of the tank, and vacuum the gravel thoroughly. This should easily come off and be sucked up. I won't go into possible "treatments" as they are in themselves risky, and this will only return if the organics are not dealt with.

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 youíre going to take it under your wing then youíre 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 #3 of 4 Old 10-10-2010, 08:11 PM Thread Starter
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Is it harmful to the fish in my tank?

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post #4 of 4 Old 10-10-2010, 09:13 PM
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The "algae" itself isn't harmful to fish but cyanobacteria often presents in the presence of high ammonia/ nitrates (although it "fixes" nitrates so they often read low).



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