What is this brown, flowing algae? - Algae - Aquatic Plant Central

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Old 01-25-2020, 04:04 PM   #1 (permalink)
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Default What is this brown, flowing algae?

See attached picture. This is in a 135G and growing on my java fern and bolbitis. The tank is pretty under stocked and ammonia, nitrites and nitrates are all at 0. Is it a brown Cyanobacteria?
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Old 01-25-2020, 04:39 PM   #2 (permalink)
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Default Re: What is this brown, flowing algae?

Welcomed to APC! I have had similar looking algae blobs in my tank, but I have never known exactly what form of algae it is. I think you need to remove all of the blobs that you can, and probably reduce the light intensity. Those two plants don't require high light.

If you nitrates are at zero you may be encouraging the algae by starving the plants. What substrate do you have? Do you dose any fertilizers? Do you use CO2?
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Old 01-25-2020, 06:50 PM   #3 (permalink)
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I just have two of these over the plants for 6 hours per day: NICREW ClassicLED Plus Planted Aquarium Light, Full Spectrum LED Fish Tank Light for Freshwater Plants, 12 to 18 Inch, 8 Watts https://www.amazon.com/dp/B07LH2FJNC..._3ZplEb7EH3N9E

The substrate is pool filter sand. You can actually check out my build here: https://www.capitalcichlids.org/foru...th-sump.36809/
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Old 01-26-2020, 09:11 AM   #4 (permalink)
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Default Re: What is this brown, flowing algae?

I dont think its a cyanobacteria. Maybe some type of Chrysophyta or Diatom?
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